Fix ID for mutation types and mutations

[chaosvolt]

Summary

SUMMARY: Bugfixes "Fix mutation and mutation type IDs accidentally changed to lowercase"

Purpose of change

Quick and easy fix to make to not trip up third-party mods. Confirmed with Coolthulhu on the BN discord that re-capitalizing mutation type LEGS and HANDS would be preferable.

Describe the solution

1. Fixed capitalization of mutation type LEGS and HANDS
2. Fixed mutation type for affected vanilla mutations.
3. Fixed mutation type for affected mod mutations, only Aftershock was affected.
4. Was also informed that three mutation IDs were affected by this, easy fix.

Describe alternatives you've considered

Just changing the case used in Arcana, only third-party mod I'm involved with that would be affected by this if I recall.

Testing

Checked affected files for syntax and load errors.

Additional context

Hopefully not too many modders will have tweaked this for BN versions of their mods by the time this is merged...

[olanti-p]

Some mutation ids also suffered:
headBUMPS
mouth_FLAPS
mouth_TENTACLES

[chaosvolt]

Oh hecc, Yeah that's not good. I'll add fixes for that to this while I'm at it.