Fix constant refresh of PRs view (#7236)

Author: alexr00

src/view/prsTreeDataProvider.ts

@@ -292,7 +292,7 @@ export class PullRequestsTreeDataProvider extends Disposable implements vscode.T
 
 	refresh(node?: TreeNode, reset?: boolean): void {
 		if (reset) {
-			this.prsTreeModel.clearCache();
+			this.prsTreeModel.clearCache(true);
 		}
 		return node ? this._onDidChangeTreeData.fire(node) : this._onDidChangeTreeData.fire();
 	}

src/view/prsTreeModel.ts

@@ -118,9 +118,11 @@ export class PrsTreeModel extends Disposable {
 		return this._queriedPullRequests.get(identifier);
 	}
 
-	public clearCache() {
+	public clearCache(silent: boolean = false) {
 		this._cachedPRs.clear();
-		this._onDidChangeData.fire();
+		if (!silent) {
+			this._onDidChangeData.fire();
+		}
 	}
 
 	public clearRepo(folderRepoManager: FolderRepositoryManager) {