Code Cleanup: Integration Tests (#29584)

Code Cleanup: Integration Tests (#29584)

* Cleanup PuddleTest

* Cleanup GravityGridTest

* Cleanup PowerTest

* Cleanup SaveLoadMapTest

* Cleanup Body tests

* Cleanup ContainerOcclusionTest

* Cleanup AirlockTest

* Cleanup DamageableTest

* Cleanup EntityTest

* Cleanup FluidSpillTest

* Cleanup FollowerSystemTest

* Cleanup HandCuffTest

* Cleanup InteractionSystemTests

* Cleanup InRangeUnobstructed

* Cleanup SimplePredictReconcileTest

* Cleanup PostMapInitTest

* Cleanup SalvageTest

* Cleanup SaveLoadSaveTest

* Cleanup ShuttleTest

* Cleanup MaterialArbitrageTest

* Cleanup PrototypeSaveTest

* Fix ShuttleTest

* Bunch of small ones

* Move JobTests to Station directory

* More small fixes

* Cleanup InteractionTest.Helpers
Had to change a method signature, so some callers were modified too.

* Missed one