Add AgentResourceResolver for RemoteHub virtual URI support in chat editing#260458

Copilot wants to merge 2 commits intomainmicrosoft/vscode:mainfrom

copilot/fix-af142708-f2f7-4805-9ceb-9ca7a9818504microsoft/vscode:copilot/fix-af142708-f2f7-4805-9ceb-9ca7a9818504Copy head branch name to clipboard