[Playground][Nit] Add delete + overtype for autoclosing brackets

Fix for papercut: playground should now be smart about autoclosing brackets. 

Before: 


https://user-images.githubusercontent.com/34200447/195653419-0eb529e4-0aed-4894-9db6-bfe1554aaded.mov 

Now: 


https://user-images.githubusercontent.com/34200447/195653738-07abed36-d9e8-4842-bac5-9e84b72c0704.mov

compiler/forget/packages/playground/components/Editor/monacoOptions.ts

@@ -17,4 +17,8 @@ export const monacoOptions: Partial<EditorProps["options"]> = {
   formatOnType: true,
   fontFamily: '"Source Code Pro", monospace',
   glyphMargin: true,
+
+  autoClosingBrackets: "languageDefined",
+  autoClosingDelete: "always",
+  autoClosingOvertype: "always",
 };