Fix: Don't prompt to fetch additional remotes when explicitly configured

When users explicitly configure githubPullRequests.remotes, the extension
should automatically fetch from all configured remotes instead of prompting
"Continue fetching from other remotes" after finding results in the first one.

This change modifies the fetchPagedData method to detect when remotes have
been explicitly configured (via global, workspace, or folder settings) and
skips the early break logic that was causing the prompt to appear.

Fixes microsoft/vscode-pull-request-github#XXXXX

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

Author: Copilot

src/github/folderRepositoryManager.ts

@@ -1086,6 +1086,10 @@ export class FolderRepositoryManager extends Disposable {
 
 		const activeGitHubRemotes = await this.getActiveGitHubRemotes(this._allGitHubRemotes);
 
+		// Check if user has explicitly configured remotes (not using defaults)
+		const remotesConfig = vscode.workspace.getConfiguration(PR_SETTINGS_NAMESPACE).inspect<string[]>(REMOTES);
+		const hasExplicitRemotesConfig = !!(remotesConfig?.globalValue || remotesConfig?.workspaceValue || remotesConfig?.workspaceFolderValue);
+
 		const githubRepositories = this._githubRepositories.filter(repo => {
 			if (!activeGitHubRemotes.find(r => r.equals(repo.remote))) {
 				return false;
@@ -1152,10 +1156,12 @@ export class FolderRepositoryManager extends Disposable {
 			// 1) we've received data AND
 			// 2) either we're fetching just the next page (case 2)
 			//    OR we're fetching all (cases 1&3), and we've fetched as far as we had previously (or further, in case 1).
+			// 3) AND the user hasn't explicitly configured remotes (if they have, we should search all of them)
 			if (
 				itemData.items.length &&
 				(options.fetchNextPage ||
-					((options.fetchNextPage === false) && !options.fetchOnePagePerRepo && (pagesFetched >= getTotalFetchedPages())))
+					((options.fetchNextPage === false) && !options.fetchOnePagePerRepo && (pagesFetched >= getTotalFetchedPages()))) &&
+				!hasExplicitRemotesConfig
 			) {
 				if (getTotalFetchedPages() === 0) {
 					// We're in case 1, manually set number of pages we looked through until we found first results.