[Bug] Healing from Moves Occurs After Damage from Iron Barbs/Rough Skin

[Snailman11]

Describe the bug

Damage from Iron Barbs/Rough Skin occurs before healing is calculated from HP-restoring damaging moves.

Link to Discord's Bug Report (Iron Barbs triggering before Drain Punch
https://discord.com/channels/1125469663833370665/1229454168197173248

Reproduction

OHKO a Pokémon with the ability Iron Barbs with a move like Drain Punch from full health, observe that your HP bar remains full, even after activating Iron Barbs.

Expected behavior

https://replay.pokemonshowdown.com/gen9customgame-2222839678-it2ey5cglj60a2g2dx1ctjsfoadw9edpw

It should Occur After healing, so that the attacker is left damaged.

Screenshots / Videos

Iron Barbs

Iron.Barbs.Healing.mp4

Rough Skin

Rough.Skin.Healing.mp4

Session export file

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User data export file

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Additional context

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