Stop hanging setupMCP on unclosed information message dialog.

Wraps the information message prompt in an async IIFE to avoid blocking
the main execution flow while awaiting user interaction. This ensures
the _gated_ `setupMCP` function always finished even if user does not
interact with the information message.
(#4756)

Author: sergeibbb

src/env/node/gk/cli/integration.ts

@@ -157,14 +157,16 @@ export class GkCliIntegrationProvider implements Disposable {
 			if (result.usingExtensionRegistration) {
 				const learnMore = { title: 'Learn More' };
 				const confirm = { title: 'OK', isCloseAffordance: true };
-				const userResult = await window.showInformationMessage(
-					'GitKraken MCP is active in your AI chat, leveraging Git and your integrations to provide context and perform actions.',
-					learnMore,
-					confirm,
-				);
-				if (userResult === learnMore) {
-					void openUrl(urls.helpCenterMCP);
-				}
+				void (async () => {
+					const userResult = await window.showInformationMessage(
+						'GitKraken MCP is active in your AI chat, leveraging Git and your integrations to provide context and perform actions.',
+						learnMore,
+						confirm,
+					);
+					if (userResult === learnMore) {
+						void openUrl(urls.helpCenterMCP);
+					}
+				})();
 			}
 		} catch (ex) {
 			if (ex instanceof McpSetupError) {