Subpack Changes Don't Update for Global Resource Packs

Steps to reproduce the issue

1. Activate a global resource pack with a subpack slider.

2. Close the settings menu so you see a “loading resource packs” dialogue before seeing the main menu again.

3. Return to global resources settings, then click the gear icon for the active resource pack with subpacks. Adjust the slider to change the subpacks.

4. Load into a world.

Expected result

• The subpack slider should reflect the subpack actually loaded in-game.

Actual result

• The subpack slider does not update the subpack loaded in-game.

Additional Info

• If you activate an unloaded global resource pack and adjust the subpack slider before exiting the settings menu and seeing the “loading resource packs” dialogue, the subpack will actually load.

• This issue was not observed on 1.21.114 previously.