File based cores don't group by disc number when sorting tracks in an album

[Arlodotexe]

Describe the bug

When you scan an album with multiple discs to it, they appear in the UI sorted by track number, but not grouped by disc number.

Affected area

• [X] Strix Music SDK
• [ ] Strix Music App

Regression

No response

Steps to reproduce

1. Setup a file based core
2. Point it to an album with multiple discs
3. When the data is output to the UI, it's sorted by track number with no regard to disc number.

Visual repro steps

Expected behavior

Track order should be grouped by disc number

Additional context

No response