Is your feature request related to a problem? Please describe.
Most declarations that reference other files (ex. import, part) support command-clicking the path to jump to that file. This currently does not work for part of. This is even weirder since it's supported in part, so you can nav to the part, but not back from it.

Describe the solution you'd like
Cmd-clicking the path (ex. "file_name.dart" below) in a part of statement should jump to that file.

part of 'file_name.dart'