Editor GPU: Double rendering after undo

[Tyriar]

Repro:

1. Enable editor gpu rendering, reload window
2. Go to this line in vscode:

   vscode/extensions/terminal-suggest/src/terminalSuggestMain.ts

   Lines 243 to 247 in 77027e7

   	export function asArray<T>(x: T | T[]): T[];
   	export function asArray<T>(x: T | readonly T[]): readonly T[];
   	export function asArray<T>(x: T | T[]): T[] {
   	return Array.isArray(x) ? x : [x];
   	}

3. Delete that function
4. Undo, 🐛 bad render