fix: Form disabled no effect on Upload (#7110)

* fix: Form disabled no effect on Upload

* docs: update Upload disabled api default value

Author: JavanShen

Diff for: components/upload/Upload.tsx

@@ -34,7 +34,6 @@ export default defineComponent({
     accept: '',
     showUploadList: true,
     listType: 'text', // or picture
-    disabled: false,
     supportServerRender: true,
   }),
   setup(props, { slots, attrs, expose }) {

Diff for: components/upload/index.en-US.md

@@ -26,7 +26,7 @@ Uploading is the process of publishing information (web pages, text, pictures, v
 | customRequest | override for the default xhr behavior allowing for additional customization and ability to implement your own XMLHttpRequest | function | - |  |  |
 | data | Uploading params or function which can return uploading params. | object\|function(file) | - |  |  |
 | directory | Support upload whole directory（[caniuse](https://caniuse.com/#feat=input-file-directory)） | boolean | false | 3.0 |  |
-| disabled | disable upload button | boolean | false |  |  |
+| disabled | disable upload button | boolean | - |  |  |
 | downloadIcon | custom download icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
 | fileList | List of files that have been uploaded (controlled). Here is a common issue [#2423](https://github.com/ant-design/ant-design/issues/2423) when using it | object\[] | - |  |  |
 | headers | Set request headers, valid above IE10. | object | - |  |  |

Diff for: components/upload/index.zh-CN.md

@@ -27,7 +27,7 @@ coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*l1nlSryXib8AAA
 | customRequest | 通过覆盖默认的上传行为，可以自定义自己的上传实现 | function | 无 |  |  |
 | data | 上传所需参数或返回上传参数的方法 | object\|(file) => object | 无 |  |  |
 | directory | 支持上传文件夹（[caniuse](https://caniuse.com/#feat=input-file-directory)） | boolean | false | 3.0 |  |
-| disabled | 是否禁用 | boolean | false |  |  |
+| disabled | 是否禁用 | boolean | - |  |  |
 | downloadIcon | 自定义下载 icon | v-slot:iconRender="{file: UploadFile}" | - | 3.0 |  |
 | fileList | 已经上传的文件列表（受控） | object\[] | 无 |  |  |
 | headers | 设置上传的请求头部，IE10 以上有效 | object | 无 |  |  |