Steps to reproduce:
1. reset everything in custom game
2. restart the game
3. go to the custom game scene
4. go to the custom sequence scene and set a new sequence
5. leave the scene and go to the custom game scene
6. begin to clear
Unintended behavior:
The sequence is still the default old sequence (7-bag)
Intended behavior:
The sequence is the newly set sequence
Rationale:
The bug was introduced by #1139.
It deleted a line of `apply_locals()` which I wrongly believed that the custom modes will execute initialize() anyway, but it turned out initialization is only executed during the start of the whole game.
The patch is simple: just add back the deleted line
fbf6e910a3