Fix oppia#19793: All languages functionality not working (oppia#19900)

All language functionality not working in community library, if is selected
any language it works. To fix it I removed this 3 lines in the file
oppia/core/templates/pages/library-page/search-bar/search-bar.components.ts:

if (!searchUrlQueryString){
    return;
}

This way it will not stop from searching without tokens in the URL. I checked
the commit (PR oppia#18882) where this was implemented and the code still works
without errors without those lines.

Author: ricky2563

core/templates/pages/library-page/search-bar/search-bar.component.ts

@@ -195,9 +195,6 @@ export class SearchBarComponent implements OnInit, OnDestroy {
       this.searchQuery, this.selectionDetails.categories.selections,
       this.selectionDetails.languageCodes.selections
     );
-    if (!searchUrlQueryString) {
-      return;
-    }
     this.searchService.executeSearchQuery(
       this.searchQuery, this.selectionDetails.categories.selections,
       this.selectionDetails.languageCodes.selections, () => {