Trim whitespace from issue query strings (#8282)

* Initial plan

* Initial plan for trimming query strings

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

* Add query string trimming to fix trailing whitespace issue

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

* Fix CI test failure by adding remotes property to mock repository

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

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

src/@types/vscode.proposed.chatSessionsProvider.d.ts

@@ -95,6 +95,11 @@ declare module 'vscode' {
 		 */
 		description?: string | MarkdownString;
 
+		/**
+		 * An optional badge that provides additional context about the chat session.
+		 */
+		badge?: string | MarkdownString;
+
 		/**
 		 * An optional status indicating the current state of the session.
 		 */