Fix scroll issues in suggestion list

Before if the list before updating contained item 'test' at position 0 and after updating that value went to the bottom, the list would incorrectly scroll to the bottom to follow that item. Now the scrolling is done after the list is updated.

Author: Stypox

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -946,8 +946,8 @@ public void handleSuggestions(@NonNull final List<SuggestionItem> suggestions) {
         if (DEBUG) {
             Log.d(TAG, "handleSuggestions() called with: suggestions = [" + suggestions + "]");
         }
-        searchBinding.suggestionsList.smoothScrollToPosition(0);
-        suggestionListAdapter.submitList(suggestions);
+        suggestionListAdapter.submitList(suggestions,
+                () -> searchBinding.suggestionsList.scrollToPosition(0));
 
         if (suggestionsPanelVisible && isErrorPanelVisible()) {
             hideLoading();