gui: Notice on folders with ignoreDelete enabled (fixes #8050) (#8054)

gui/default/index.html

@@ -428,6 +428,13 @@
                           <div ng-if="model[folder.id].ignorePatterns">
                             <a href="" ng-click="editFolderExisting(folder, '#folder-ignores')"><i class="small" translate>Reduced by ignore patterns</i></a>
                           </div>
+                          <div ng-if="folder.ignoreDelete">
+                            <i class="small">
+                              <span translate style="white-space: normal;">Altered by ignoring deletes.</span>
+                              <br>
+                              <a href="https://docs.syncthing.net/advanced/folder-ignoredelete" target="_blank"><span class="fas fa-question-circle"></span>&nbsp;<span translate>Help</span></a>
+                            </i>
+                          </div>
                         </td>
                       </tr>
                       <tr ng-if="model[folder.id].needTotalItems > 0">