Add No source found state and error state

Summary: Note There is currently an issue with myles https://fb.workplace.com/groups/myles.search/permalink/1446945366079946/?notif_id=1688467057742844&notif_t=video_processed&ref=notif

Reviewed By: lblasa

Differential Revision: D47210290

fbshipit-source-id: 584435922610e5138a6c14543163fcf3a347a727

desktop/plugins/public/ui-debugger/components/util/UIDebuggerMenuItem.tsx

@@ -21,7 +21,7 @@ import React from 'react';
 export const UIDebuggerMenuItem: React.FC<{
   text: string;
   icon?: React.ReactNode;
-  onClick: () => void;
+  onClick?: () => void;
 }> = ({text, onClick, icon}) => {
   const instance = usePlugin(plugin);
 
@@ -36,8 +36,9 @@ export const UIDebuggerMenuItem: React.FC<{
   }
   return (
     <Menu.Item
+      disabled={onClick == null}
       onClick={() => {
-        onClick();
+        onClick?.();
         instance.uiState.isContextMenuOpen.set(false);
       }}>
       <Layout.Horizontal center gap="small">