src/vs/workbench/contrib/webview/browser/baseWebviewElement.ts/BaseWebview/handleKeyEvent
class BaseWebview:	private handleKeyEvent(type: 'keydown' | 'keyup', event: IKeydownEvent) {
		// Create a fake KeyboardEvent from the data provided
		const emulatedKeyboardEvent = new KeyboardEvent(type, event);
		// Force override the target
		Object.defineProperty(emulatedKeyboardEvent, 'target', {
			get: () => this.element,
		});
		// And re-dispatch
		window.dispatchEvent(emulatedKeyboardEvent);
	}