Partial atmos refactor (#22521)

* Reduce atmos component queries

* Remove method events

* Cache airtight data

* Make MolesArchived nullable

* Fix airtight cache

* only get tile def once

* Immutable mixtures

* firelock queries

* misc

* misc cleanup

* Trim disconnected tiles

* Fix merge issues and bugs

* Why does the PR keep increasing in scope

* debug overlay

* Fix bugs

* Fix test, remove unused events

* Add setmapatmos command

* Fix overlays

* Add map check

* A

* Resolve conflicts with #26102

* Remove some obsolete methods

(cherry picked from commit 18a35e7e83)

Content.Server/Explosion/EntitySystems/ExplosionSystem.Processing.cs

@@ -493,7 +493,7 @@ public sealed partial class ExplosionSystem
         if (_tileDefinitionManager[tileRef.Tile.TypeId] is not ContentTileDefinition tileDef)
             return;
 
-        if (tileDef.IsSpace)
+        if (tileDef.MapAtmosphere)
             canCreateVacuum = true; // is already a vacuum.
 
         int tileBreakages = 0;
@@ -509,7 +509,7 @@ public sealed partial class ExplosionSystem
             if (_tileDefinitionManager[tileDef.BaseTurf] is not ContentTileDefinition newDef)
                 break;
 
-            if (newDef.IsSpace && !canCreateVacuum)
+            if (newDef.MapAtmosphere && !canCreateVacuum)
                 break;
 
             tileDef = newDef;