Enable sorting in search by trend scores (#8803)

Author: szakarias

app/lib/frontend/handlers/experimental.dart

@@ -92,7 +92,7 @@ class ExperimentalFlags {
 
   bool get isDarkModeDefault => isEnabled('dark-as-default');
 
-  bool get showTrending => isEnabled('trending-search');
+  bool get showTrending => true;
 
   String encodedAsCookie() => _enabled.join(':');
 

app/test/frontend/golden/pkg_index_page.html

@@ -427,6 +427,7 @@ <h3 class="search-form-section-header foldable-button">
                 <button class="sort-control-option" data-value="like">most likes</button>
                 <button class="sort-control-option" data-value="points">most pub points</button>
                 <button class="sort-control-option" data-value="downloads">downloads</button>
+                <button class="sort-control-option" data-value="trending">trending</button>
               </div>
             </div>
           </div>

app/test/frontend/golden/publisher_packages_page.html

@@ -181,6 +181,7 @@ <h1 class="title pub-monochrome-icon-hoverable">example.com</h1>
                         <button class="sort-control-option" data-value="like">most likes</button>
                         <button class="sort-control-option" data-value="points">most pub points</button>
                         <button class="sort-control-option" data-value="downloads">downloads</button>
+                        <button class="sort-control-option" data-value="trending">trending</button>
                       </div>
                     </div>
                   </div>

app/test/frontend/golden/publisher_unlisted_packages_page.html

@@ -181,6 +181,7 @@ <h1 class="title pub-monochrome-icon-hoverable">example.com</h1>
                         <button class="sort-control-option" data-value="like">most likes</button>
                         <button class="sort-control-option" data-value="points">most pub points</button>
                         <button class="sort-control-option" data-value="downloads">downloads</button>
+                        <button class="sort-control-option" data-value="trending">trending</button>
                       </div>
                     </div>
                   </div>

app/test/frontend/golden/search_page.html

@@ -428,6 +428,7 @@ <h3 class="search-form-section-header foldable-button">
                 <button class="sort-control-option" data-value="like">most likes</button>
                 <button class="sort-control-option" data-value="points">most pub points</button>
                 <button class="sort-control-option" data-value="downloads">downloads</button>
+                <button class="sort-control-option" data-value="trending">trending</button>
               </div>
             </div>
           </div>