Fix incorrectly disposing some disposables (microsoft#203809)

Fix microsoft#203794

Author: roblourens

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

@@ -527,8 +527,6 @@ export class ChatListItemRenderer extends Disposable implements ITreeRenderer<Ch
 			return true;
 		}
 
-		disposables.clear();
-
 		const renderableResponse = annotateSpecialMarkdownContent(element.response.value);
 		let isFullyRendered = false;
 		if (element.isCanceled) {
@@ -609,6 +607,7 @@ export class ChatListItemRenderer extends Disposable implements ITreeRenderer<Ch
 				disposables.clear();
 				this.basicRenderElement(renderableResponse, element, index, templateData);
 			} else if (!isFullyRendered) {
+				disposables.clear();
 				this.renderContentReferencesIfNeeded(element, templateData, disposables);
 				let hasRenderedOneMarkdownBlock = false;
 				partsToRender.forEach((partToRender, index) => {