reset input in welcome view on context change for experimental mode (#254692)

Author: bhavyaus

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

@@ -461,6 +461,21 @@ export class ChatWidget extends Disposable implements IChatWidget {
 		}));
 
 		this._register(this.onDidChangeParsedInput(() => this.updateChatInputContext()));
+
+		this._register(this.contextKeyService.onDidChangeContext(e => {
+			if (e.affectsSome(new Set([
+				ChatContextKeys.Setup.installed.key,
+				ChatContextKeys.Entitlement.canSignUp.key
+			]))) {
+				// reset the input in welcome view if it was rendered in experimental mode
+				if (this.container.classList.contains('experimental-welcome-view')) {
+					this.container.classList.remove('experimental-welcome-view');
+					const renderFollowups = this.viewOptions.renderFollowups ?? false;
+					const renderStyle = this.viewOptions.renderStyle;
+					this.createInput(this.container, { renderFollowups, renderStyle });
+				}
+			}
+		}));
 	}
 
 	private _lastSelectedAgent: IChatAgentData | undefined;