zed: Respect `default_open_behavior` when opening file from Finder (#59661)

Follow up to #59551 so that it also works when opening a single file,
e.g. from finder

See #59950

Release Notes:

- N/A
52b61cf424Bennet Bo Fenner committed on 7/2/2026, 12:56:04 PM· committed by GitHubparentc556938
1 file changedLine totals unavailable