stray `executing` tool invocation

[justschen]

1. edit a file with confirmation (package.json maybe)
2. allow
3. note there is a stray spinner

[vs-code-engineering]

Hi @justschen. As a member of the team, you can help us triage this issue by referring to https://github.com/microsoft/vscode-copilot/wiki/Copilot-Inbox-Tracker and assigning an owner directly.