address some comments

Author: justschen

src/vs/workbench/contrib/chat/browser/chatInputPart.ts

@@ -220,7 +220,7 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 	private attachmentsContainer!: HTMLElement;
 
 	private chatInputOverlay!: HTMLElement;
-	private _overlayClickListener: IDisposable | undefined;
+	private readonly _overlayClickListener = this._register(new MutableDisposable<IDisposable>());
 
 	private attachedContextContainer!: HTMLElement;
 	private readonly attachedContextDisposables: MutableDisposable<DisposableStore>;
@@ -1308,15 +1308,13 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 	public toggleChatInputOverlay(editing: boolean): void {
 		this.chatInputOverlay.classList.toggle('disabled', editing);
 		if (editing) {
-			this._overlayClickListener?.dispose();
-			this._overlayClickListener = this._register(dom.addStandardDisposableListener(this.chatInputOverlay, dom.EventType.CLICK, e => {
+			this._overlayClickListener.value = dom.addStandardDisposableListener(this.chatInputOverlay, dom.EventType.CLICK, e => {
 				e.preventDefault();
 				e.stopPropagation();
 				this._onDidClickOverlay.fire();
-			}));
+			});
 		} else {
-			this._overlayClickListener?.dispose();
-			this._overlayClickListener = undefined;
+			this._overlayClickListener.clear();
 		}
 	}
 

src/vs/workbench/contrib/chat/browser/media/chat.css

@@ -2345,7 +2345,6 @@ have to be updated for changes to the rules above, or to support more deeply nes
 	display: flex;
 	z-index: 101;
 	user-select: none;
-	pointer-events: auto;
 	cursor: default;
 }