Description

dart_frog build fails when run in a pub workspace package.
The issue seems to be that a pub workspace will only generate one global pbspec.lock file for the entire repository. Therefore, the post gen hook of the dart_frog_prod_server mason module fails.

 dart_frog build 
✓ Installing dependencies (3.4s)
✓ Bundling sources (0.2s)
An exception occurred while executing hook:REDACTED/.mason-cache/bundled/dart_frog_prod_server_0.1.0+1_8f9e5f00a1ad5ac6fe64824ffeb33163fed9b0ba/hooks/pre_gen.dart.
Error: PathNotFoundException: Cannot open file, path = 'REDACTED/packages/api/pubspec.lock' (OS Error: No such file or directory, errno = 2)

Steps To Reproduce

1. create a dart pub workspace mono repo
2. cd packages/api (the package our server code is living in)
3. dart_frog build ⚡

Expected Behavior

dart_frog manages to build the server code.

Additional Context

For reference, pub workspaces are the new dart native mono repo management, which is currently in preview since dart 3.5.
More info at: https://flutter.dev/go/pub-workspace