doc: update select suffix demo, close #5701

Author: tangjinzhou

components/select/__tests__/__snapshots__/demo.test.js.snap

@@ -537,7 +537,7 @@ exports[`renders ./components/select/demo/suffix.vue correctly 1`] = `
       <!---->
       <div class="ant-select-selector"><span class="ant-select-selection-search"><input type="search" id="rc_select_TEST_OR_SSR" autocomplete="off" class="ant-select-selection-search-input" role="combobox" aria-haspopup="listbox" aria-owns="rc_select_TEST_OR_SSR_list" aria-autocomplete="list" aria-controls="rc_select_TEST_OR_SSR_list" aria-activedescendant="rc_select_TEST_OR_SSR_list_0" readonly="" unselectable="on" style="opacity: 0;"></span><span class="ant-select-selection-item" title="Lucy">Lucy</span>
         <!---->
-      </div><span class="ant-select-arrow" style="user-select: none;" unselectable="on" aria-hidden="true"><span role="img" aria-label="smile" class="anticon anticon-smile"><svg focusable="false" class="" data-icon="smile" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M288 421a48 48 0 1096 0 48 48 0 10-96 0zm352 0a48 48 0 1096 0 48 48 0 10-96 0zM512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm263 711c-34.2 34.2-74 61-118.3 79.8C611 874.2 562.3 884 512 884c-50.3 0-99-9.8-144.8-29.2A370.4 370.4 0 01248.9 775c-34.2-34.2-61-74-79.8-118.3C149.8 611 140 562.3 140 512s9.8-99 29.2-144.8A370.4 370.4 0 01249 248.9c34.2-34.2 74-61 118.3-79.8C413 149.8 461.7 140 512 140c50.3 0 99 9.8 144.8 29.2A370.4 370.4 0 01775.1 249c34.2 34.2 61 74 79.8 118.3C874.2 413 884 461.7 884 512s-9.8 99-29.2 144.8A368.89 368.89 0 01775 775zM664 533h-48.1c-4.2 0-7.8 3.2-8.1 7.4C604 589.9 562.5 629 512 629s-92.1-39.1-95.8-88.6c-.3-4.2-3.9-7.4-8.1-7.4H360a8 8 0 00-8 8.4c4.4 84.3 74.5 151.6 160 151.6s155.6-67.3 160-151.6a8 8 0 00-8-8.4z"></path></svg></span></span>
+      </div><span class="ant-select-arrow" style="user-select: none;" unselectable="on" aria-hidden="true"><span role="img" aria-label="smile" class="anticon anticon-smile ant-select-suffix"><svg focusable="false" class="" data-icon="smile" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M288 421a48 48 0 1096 0 48 48 0 10-96 0zm352 0a48 48 0 1096 0 48 48 0 10-96 0zM512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm263 711c-34.2 34.2-74 61-118.3 79.8C611 874.2 562.3 884 512 884c-50.3 0-99-9.8-144.8-29.2A370.4 370.4 0 01248.9 775c-34.2-34.2-61-74-79.8-118.3C149.8 611 140 562.3 140 512s9.8-99 29.2-144.8A370.4 370.4 0 01249 248.9c34.2-34.2 74-61 118.3-79.8C413 149.8 461.7 140 512 140c50.3 0 99 9.8 144.8 29.2A370.4 370.4 0 01775.1 249c34.2 34.2 61 74 79.8 118.3C874.2 413 884 461.7 884 512s-9.8 99-29.2 144.8A368.89 368.89 0 01775 775zM664 533h-48.1c-4.2 0-7.8 3.2-8.1 7.4C604 589.9 562.5 629 512 629s-92.1-39.1-95.8-88.6c-.3-4.2-3.9-7.4-8.1-7.4H360a8 8 0 00-8 8.4c4.4 84.3 74.5 151.6 160 151.6s155.6-67.3 160-151.6a8 8 0 00-8-8.4z"></path></svg></span></span>
       <!---->
     </div>
   </div>
@@ -548,7 +548,7 @@ exports[`renders ./components/select/demo/suffix.vue correctly 1`] = `
       <!---->
       <div class="ant-select-selector"><span class="ant-select-selection-search"><input type="search" id="rc_select_TEST_OR_SSR" disabled="" autocomplete="off" class="ant-select-selection-search-input" role="combobox" aria-expanded="false" aria-haspopup="listbox" aria-owns="rc_select_TEST_OR_SSR_list" aria-autocomplete="list" aria-controls="rc_select_TEST_OR_SSR_list" aria-activedescendant="rc_select_TEST_OR_SSR_list_0" readonly="" unselectable="on" style="opacity: 0;"></span><span class="ant-select-selection-item" title="Lucy">Lucy</span>
         <!---->
-      </div><span class="ant-select-arrow" style="user-select: none;" unselectable="on" aria-hidden="true"><span role="img" aria-label="meh" class="anticon anticon-meh"><svg focusable="false" class="" data-icon="meh" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M288 421a48 48 0 1096 0 48 48 0 10-96 0zm352 0a48 48 0 1096 0 48 48 0 10-96 0zM512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm263 711c-34.2 34.2-74 61-118.3 79.8C611 874.2 562.3 884 512 884c-50.3 0-99-9.8-144.8-29.2A370.4 370.4 0 01248.9 775c-34.2-34.2-61-74-79.8-118.3C149.8 611 140 562.3 140 512s9.8-99 29.2-144.8A370.4 370.4 0 01249 248.9c34.2-34.2 74-61 118.3-79.8C413 149.8 461.7 140 512 140c50.3 0 99 9.8 144.8 29.2A370.4 370.4 0 01775.1 249c34.2 34.2 61 74 79.8 118.3C874.2 413 884 461.7 884 512s-9.8 99-29.2 144.8A368.89 368.89 0 01775 775zM664 565H360c-4.4 0-8 3.6-8 8v48c0 4.4 3.6 8 8 8h304c4.4 0 8-3.6 8-8v-48c0-4.4-3.6-8-8-8z"></path></svg></span></span>
+      </div><span class="ant-select-arrow" style="user-select: none;" unselectable="on" aria-hidden="true"><span role="img" aria-label="meh" class="anticon anticon-meh ant-select-suffix"><svg focusable="false" class="" data-icon="meh" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M288 421a48 48 0 1096 0 48 48 0 10-96 0zm352 0a48 48 0 1096 0 48 48 0 10-96 0zM512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm263 711c-34.2 34.2-74 61-118.3 79.8C611 874.2 562.3 884 512 884c-50.3 0-99-9.8-144.8-29.2A370.4 370.4 0 01248.9 775c-34.2-34.2-61-74-79.8-118.3C149.8 611 140 562.3 140 512s9.8-99 29.2-144.8A370.4 370.4 0 01249 248.9c34.2-34.2 74-61 118.3-79.8C413 149.8 461.7 140 512 140c50.3 0 99 9.8 144.8 29.2A370.4 370.4 0 01775.1 249c34.2 34.2 61 74 79.8 118.3C874.2 413 884 461.7 884 512s-9.8 99-29.2 144.8A368.89 368.89 0 01775 775zM664 565H360c-4.4 0-8 3.6-8 8v48c0 4.4 3.6 8 8 8h304c4.4 0 8-3.6 8-8v-48c0-4.4-3.6-8-8-8z"></path></svg></span></span>
       <!---->
     </div>
   </div>

components/select/demo/suffix.vue

@@ -24,10 +24,10 @@ Basic Usage
       :options="options1"
       @change="handleChange"
     >
-      <template #suffixIcon><smile-outlined /></template>
+      <template #suffixIcon><smile-outlined class="ant-select-suffix" /></template>
     </a-select>
     <a-select v-model:value="value2" style="width: 120px" disabled :options="options2">
-      <template #suffixIcon><meh-outlined /></template>
+      <template #suffixIcon><meh-outlined class="ant-select-suffix" /></template>
     </a-select>
   </a-space>
 </template>