Rework CollisionGroups (#7656)

* Replace Mob, Vault, and Small impassable with Mid, High, Low

* Remove CollisionGroup.Underplating

* Remove CollisionGroup.Passable

* Fix constructed APCs not being interactable

* Change firelocks to occlude

* Make pipe inherit from BaseItem

* Clean up pipes

* Remove duplicate physics and fixtures from bucket

* Rework CollisionGroups on all entities

* Add SlipLayer

* Remove fixture from delta

* Fix maps

* Address reviews

* Add SubfloorMask

* Fix glass collisions for flying mobs

* Fix maps

* Update new items

* Fix bagel again

* Fix slug

* Fix maps

* Touchups

* Fix tables blocking high pressure movement

* Update StandingState to allow going under flaps

* Cleanup

* More formatting

Content.Shared/Standing/StandingStateComponent.cs

@@ -17,11 +17,11 @@ namespace Content.Shared.Standing
         public bool Standing { get; set; } = true;
 
         /// <summary>
-        ///     List of fixtures that had vault-impassable prior to an entity being downed. Required when re-adding the
-        ///     collision mask.
+        ///     List of fixtures that had their collision mask changed when the entity was downed.
+        ///     Required for re-adding the collision mask.
         /// </summary>
-        [DataField("vaultImpassableFixtures")]
-        public List<string> VaultImpassableFixtures = new();
+        [DataField("changedFixtures")]
+        public List<string> ChangedFixtures = new();
 
         public override ComponentState GetComponentState()
         {