fix editor scroll bar on first load

It seems that some container of the Editor component is breaking the
resize calculation when the page firsts loads. So we have to be bit
hacky and defer the call the resize until after all components have
been rendered.

src/components/Editor.tsx

@@ -49,6 +49,9 @@ class Editor extends React.Component<EditorProps> {
 
     componentDidMount(): void {
         window.addEventListener('storage', this.onStorage);
+        // scroll bar is broken unless we do this when there is an ancestor
+        // that resizes things during load.
+        setTimeout(() => this.editorRef.current?.editor.resize(), 0);
     }
 
     componentWillUnmount(): void {