Honor repository selection for PR and issue status bars

[Copilot]

In multi-repo workspaces, the PR status bar item remained static when switching between repositories via the Source Control view.

Uses the git extension API's RepositoryUIState interface (repository.ui.selected and repository.ui.onDidChange) to track selection changes and update status bar visibility accordingly.

Changes

ReviewManager (PR status bar):

• Track _isRepositorySelected state, initialized from repository.ui.selected
• Subscribe to repository.ui.onDidChange to detect selection changes
• Gate all statusBarItem.show() calls on selection state

StateManager (Issues status bar):

• Filter currentIssues() to only include issues from selected repositories
• Subscribe to repository.ui.onDidChange to refresh status bar on selection change

// Example: listening for repository selection changes
this._register(this._repository.ui.onDidChange(() => {
    this._isRepositorySelected = this._repository.ui.selected;
    this.updateStatusBarVisibility();
}));

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• update.code.visualstudio.com
  • Triggering command: /opt/hostedtoolcache/node/20.20.0/x64/bin/node node ./out/src/test/runTests.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>PR extension doesn't honor swapping between repositories</issue_title>
<issue_description>Testing microsoft/vscode#274788

It would be cool if the PR extension knew when I swapped between repos.

This status bar icon stayed the same regardless of which repo i chose

</issue_description>

<agent_instructions>The git extension API has a RepositoryUIState interface, with an onDidChange. Use this to watch for changes, and show the appropriate status bar item based on the selected repo</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@lszomoru Adding @alexr00. I think that this should be possible, but please let me know if you are missing any git extension API.

• Fixes PR extension doesn't honor swapping between repositories vscode#275403

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