[Bug] Direct Damage Moves Bypass Sturdy

[Snailman11]

Describe the bug

When used against a Pokemon with Sturdy in conditions where Sturdy should activate, (move damage reduces HP past 0), Sturdy does not activate when hit by most Direct Damage moves
https://bulbapedia.bulbagarden.net/wiki/Category:Moves_that_deal_direct_damage

This includes Night Shade/Seismic Toss, Dragon Rage, Sonic Boom, Counter, Mirror Coat, Comeuppance, Metal Burst.

Likely causd by the matching attribute, FixedDamageAttr, which Final Gambit does not use.

Link to Discord's Bug Report (Seismic toss ignoring sturdy)
https://discord.com/channels/1125469663833370665/1300577683142610986

Reproduction

Use one of the Direct Damage moves against a Pokemon with Sturdy, at Full health and when the move would normally KO it.

Expected behavior

https://replay.pokemonshowdown.com/gen9customgame-2266797289
Sturdy should activate against all Direct Damage moves.

Screenshots / Videos

Dragon Rage

Dragon.Rage.Bypasses.Sturdy.mp4

Mirror Coat

Mirror.Coat.Bypasses.Sturdy.mp4

Seismic Toss

Seismic.Toss.Sturdy.mp4

Session export file

No response

User data export file

No response

Additional context

Final Gambit does not bypass Sturdy

Final.Gambit.does.not.bypass.Sturdy.mp4

Endure does prevent Direct Damage from KOing

Endure.works.with.Direct.Damage.mp4