[Improvement request] When other files in folder are added too start playback selected one

[alexcom]

Describe
I have "Add other files in the same folder when adding a file" option enabled.
When I open particular file Cog adds entire directory content and starts playback from the top of the added list. It seems logical to me to start playing the opened file instead even if it's not the first file in the folder.
To Reproduce (delete if not applicable)
Steps to reproduce the behavior:

1. Enable "Add other files in the same folder when adding a file"
2. Open directory in the tree and open a track, but not the first one.

Expected behavior
Entire folder content is added to playlist and playback starts with opened file.

Version information:*

• macOS version: 13.5.2
• Cog version: Version 2848 (2848-g42ea8249)