Move battle logic out of Transform/Ally Switch animations

[mrgriffin]

Description

#3533 fixed Transform and Ally Switch in the tests, but part of making that work is having the animations for both effects always play, even when headless. This is needed because the animation tasks change the battle data (thanks GF!).

We should move those bits of logic into the battle scripts so that we can always skip animations.

Version

1.7.0 (Default)

Upcoming Version

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Discord contact info

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