EVENT BASED WEIGHTLESSNESS (#37971)

* Init Commit

* Typos

* Commit 2

* Save Interaction Test Mob from failing

* ssss

* Confident I've gotten all the correct prototypes

* Whoops forgot to edit those

* aaaaa

* Better solution

* Test fail fixes

* Yaml fix

* THE FINAL TEST FIX

* Final fix(?)

* whoops

* Added a WeightlessnessChangedEvent

* Check out this diff

* Wait I'm dumb

* Final optimization and don't duplicate code

* Death to IsWeightless

* File scoped namespaces

* REVIEW

* Fix test fails

* FIX TEST FAILS REAL

* A

* Commit of doom

* borgar

* We don't need to specify on map init apparently

* Fuck it

* LOAD BEARING COMMENT

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Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>

Content.Shared/StepTrigger/Systems/StepTriggerSystem.cs

@@ -139,7 +139,7 @@ public sealed class StepTriggerSystem : EntitySystem
         // and the entity is flying or currently weightless
         // Makes sense simulation wise to have this be part of steptrigger directly IMO
         if (!component.IgnoreWeightless && TryComp<PhysicsComponent>(otherUid, out var physics) &&
-            (physics.BodyStatus == BodyStatus.InAir || _gravity.IsWeightless(otherUid, physics)))
+            (physics.BodyStatus == BodyStatus.InAir || _gravity.IsWeightless(otherUid)))
             return false;
 
         var msg = new StepTriggerAttemptEvent { Source = uid, Tripper = otherUid };