Fix copy-pasting sql into the action editor (#29034) (#29051)

Co-authored-by: Alexander Polyankin <alexander.polyankin@metabase.com>

frontend/src/metabase/actions/containers/ActionCreator/ActionCreator.tsx

@@ -184,9 +184,7 @@ function ActionCreator({
 function ensureAceEditorClosed() {
   // @ts-expect-error — `ace` isn't typed yet
   const editor = window.ace?.edit(ACE_ELEMENT_ID);
-  if (editor) {
-    editor.completer.popup.hide();
-  }
+  editor?.completer?.popup?.hide();
 }
 
 function ActionCreatorWithContext({