Add notification change listeners to PRNode

Listen for notification changes from both NotificationsManager and PrsTreeModel.
When a notification affecting this PR changes, refresh the node to update its
context value, which controls whether the dismiss notification option appears.

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

src/view/treeNodes/pullRequestNode.ts

@@ -57,6 +57,7 @@ export class PRNode extends TreeNode implements vscode.CommentingRangeProvider2
 		super(parent);
 		this.registerSinceReviewChange();
 		this.registerConfigurationChange();
+		this.registerNotificationChanges();
 		this._register(this._folderReposManager.onDidChangeActivePullRequest(e => {
 			if (e.new?.number === this.pullRequestModel.number || e.old?.number === this.pullRequestModel.number) {
 				this.refresh(this);
@@ -144,6 +145,37 @@ export class PRNode extends TreeNode implements vscode.CommentingRangeProvider2
 		}));
 	}
 
+	protected registerNotificationChanges() {
+		// Listen for regular notification changes
+		this._register(this._notificationProvider.onDidChangeNotifications(notifications => {
+			// Check if any of the changed notifications are for this PR
+			const affectsThisPR = notifications.some(notification => {
+				if (notification.model instanceof PullRequestModel) {
+					return notification.model.number === this.pullRequestModel.number &&
+						notification.model.remote.owner === this.pullRequestModel.remote.owner &&
+						notification.model.remote.repositoryName === this.pullRequestModel.remote.repositoryName;
+				}
+				return false;
+			});
+			if (affectsThisPR) {
+				this.refresh(this);
+			}
+		}));
+
+		// Listen for Copilot notification changes
+		this._register(this._prsTreeModel.onDidChangeCopilotNotifications(pullRequests => {
+			// Check if any of the changed notifications are for this PR
+			const affectsThisPR = pullRequests.some(pr =>
+				pr.number === this.pullRequestModel.number &&
+				pr.remote.owner === this.pullRequestModel.remote.owner &&
+				pr.remote.repositoryName === this.pullRequestModel.remote.repositoryName
+			);
+			if (affectsThisPR) {
+				this.refresh(this);
+			}
+		}));
+	}
+
 	public async reopenNewPrDiffs(pullRequest: PullRequestModel) {
 		let hasOpenDiff: boolean = false;
 		vscode.window.tabGroups.all.map(tabGroup => {