acp: Fix issue with mentions when `embedded_context` is set to `false` (#42260)

Release Notes:

- acp: Fixed an issue where Zed would not respect
`PromptCapabilities::embedded_context`
431a195c32Bennet Bo Fenner committed on 11/9/2025, 7:44:07 PM· committed by GitHubparent6db6251
1 file changedLine totals unavailable