Skip async content part render if disposed of

Author: mjbvz

src/vs/workbench/contrib/chat/browser/chatContentParts/chatMarkdownContentPart.ts

@@ -77,6 +77,8 @@ export class ChatMarkdownContentPart extends Disposable implements IChatContentP
 
 	private readonly mathLayoutParticipants = new Set<() => void>();
 
+	private _isDisposed = false;
+
 	constructor(
 		private readonly markdown: IChatMarkdownContent,
 		context: IChatContentPartRenderContext,
@@ -110,6 +112,10 @@ export class ChatMarkdownContentPart extends Disposable implements IChatContentP
 		const enableMath = configurationService.getValue<boolean>(ChatConfiguration.EnableMath);
 
 		const doRenderMarkdown = () => {
+			if (this._isDisposed) {
+				return;
+			}
+
 			// TODO: Move katex support into chatMarkdownRenderer
 			const markedExtensions = enableMath
 				? coalesce([MarkedKatexSupport.getExtension(dom.getWindow(context.container), {
@@ -280,6 +286,11 @@ export class ChatMarkdownContentPart extends Disposable implements IChatContentP
 		}
 	}
 
+	override dispose(): void {
+		this._isDisposed = true;
+		super.dispose();
+	}
+
 	private renderCodeBlockPill(sessionId: string, requestId: string, inUndoStop: string | undefined, codemapperUri: URI | undefined, isStreaming: boolean): IDisposableReference<CollapsedCodeBlock> {
 		const codeBlock = this.instantiationService.createInstance(CollapsedCodeBlock, sessionId, requestId, inUndoStop);
 		if (codemapperUri) {