Can we revert cryo-freeze buggy nerf

[GreyFalcon-11737]

@Wabba-11628

This seems really OP. So many buffs and the only real nerf seems to be she’d occupy the tank slot instead of the dps slot.

Most of them are just reverts for recent nerfs.

It’s only this, when you take out the reverts.

@GreyFalcon-11737

Mei

• Moved to the Tank role.
• Health increased to 350.

Cryo-Freeze (Iceblock):

• Self-healing reduced to 100hp