feat: Add guide-open event to <page-search>

<page-search> re-transmits the `guide-open` event emitted by
<search-results>, preserving the arguments as-is.

Author: pastelmind

index.html

@@ -124,6 +124,7 @@ <h2 class="page-guide__title">{{guide.title}}</h2>
           :value="filteredSearchResults"
           :search-text="searchText"
           :is-search-text-too-short="isSearchTextTooShort"
+          @guide-open="$emit('guide-open', ...arguments)"
         />
       </div>
     </template>