PA Fixes (#18116)

* PA Fixes

Fix exception when opening UI if it has the power limiter warning displayed.

Fix it sometimes not detecting parts due to angles not getting normalized before comparison.

* Fix swapped out sprites for PA emitter P0 states

Content.Client/ParticleAccelerator/UI/ParticleAcceleratorControlMenu.cs

@@ -409,7 +409,7 @@ namespace Content.Client.ParticleAccelerator.UI
             if (_maxStrength > 3 && enabled && assembled)
             {
                 _shouldContinueAnimating = true;
-                if (!_alarmControl.Visible)
+                if (!_alarmControl.HasRunningAnimation("warningAnim"))
                     _alarmControl.PlayAnimation(_alarmControlAnimation, "warningAnim");
             }
             else

Content.Server/ParticleAccelerator/EntitySystems/ParticleAcceleratorSystem.Parts.cs

@@ -131,7 +131,7 @@ public sealed partial class ParticleAcceleratorSystem
         {
             if (compQuery.TryGetComponent(entity, out comp)
             && TryComp<ParticleAcceleratorPartComponent>(entity, out var partState) && partState.Master == null
-            && (rotation == null || MathHelper.CloseTo(Transform(entity).LocalRotation.Theta, rotation!.Value.Theta)))
+            && (rotation == null || Transform(entity).LocalRotation.EqualsApprox(rotation!.Value.Theta)))
             {
                 part = entity;
                 return true;