Ensure the welcome message avatar icon rerenders when the chat session loads (microsoft#182923)

Author: roblourens

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

@@ -174,6 +174,8 @@ export class ChatWidget extends Disposable implements IChatWidget {
 				diffIdentityProvider: {
 					getId: (element) => {
 						return ((isResponseVM(element) || isRequestVM(element)) ? element.dataId : element.id) +
+							// TODO? We can give the welcome message a proper VM or get rid of the rest of the VMs
+							((isWelcomeVM(element) && !this.viewModel?.isInitialized) ? '_initializing' : '') +
 							// Ensure re-rendering an element once slash commands are loaded, so the colorization can be applied.
 							`${(isRequestVM(element) || isWelcomeVM(element)) && !!this.lastSlashCommands ? '_scLoaded' : ''}` +
 							// If a response is in the process of progressive rendering, we need to ensure that it will

src/vs/workbench/contrib/chat/common/chatViewModel.ts

@@ -27,6 +27,7 @@ export function isWelcomeVM(item: unknown): item is IInteractiveWelcomeMessageVi
 }
 
 export interface IChatViewModel {
+	readonly isInitialized: boolean;
 	readonly providerId: string;
 	readonly sessionId: string;
 	readonly onDidDisposeModel: Event<void>;
@@ -108,6 +109,10 @@ export class ChatViewModel extends Disposable implements IChatViewModel {
 		return this._model.providerId;
 	}
 
+	get isInitialized() {
+		return this._model.isInitialized;
+	}
+
 	constructor(
 		private readonly _model: IChatModel,
 		@IInstantiationService private readonly instantiationService: IInstantiationService,