fix microsoft/vscode-internalbacklog#4298 (microsoft#183957)

Author: jrieken

src/vs/workbench/contrib/interactiveEditor/browser/interactiveEditor.css

@@ -3,8 +3,11 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
+.monaco-editor .zone-widget.interactive-editor-widget {
+	z-index: 3;
+}
+
 .monaco-editor .interactive-editor {
-	z-index: 100;
 	color: inherit;
 	padding: 6px;
 	border-radius: 6px;