Core/Phasing: Fixed inverse phaseshift logic

Port From (https://github.com/TrinityCore/TrinityCore/commit/630adfec227c18b8825f4871a1bf1a395b8dee05)

Source/Framework/Constants/CliDBConst.cs

@@ -1617,9 +1617,16 @@ namespace Framework.Constants
 
     public enum PhaseEntryFlags : ushort
     {
-        Normal = 0x08,
-        Cosmetic = 0x10,
-        Personal = 0x20
+        ReadOnly = 0x001,
+        InternalPhase = 0x002,
+        Normal = 0x008,
+        Cosmetic = 0x010,
+        Personal = 0x020,
+        Expensive = 0x040,
+        EventsAreObservable = 0x080,
+        UsesPreloadConditions = 0x100,
+        UnshareablePersonal = 0x200,
+        ObjectsAreVisible = 0x400,
     }
 
     // PhaseUseFlags fields in different db2s

Source/Game/Phasing/PhaseShift.cs

@@ -166,8 +166,8 @@ namespace Game
 
             var checkInversePhaseShift = new Func<PhaseShift, PhaseShift, bool>((phaseShift, excludedPhaseShift) =>
             {
-                if (phaseShift.Flags.HasFlag(PhaseShiftFlags.Unphased) && !excludedPhaseShift.Flags.HasFlag(PhaseShiftFlags.InverseUnphased))
-                    return true;
+                if (phaseShift.Flags.HasFlag(PhaseShiftFlags.Unphased) && excludedPhaseShift.Flags.HasFlag(PhaseShiftFlags.InverseUnphased))
+                    return false;
 
                 foreach (var pair in phaseShift.Phases)
                 {
@@ -175,11 +175,11 @@ namespace Game
                         continue;
 
                     var ExcludedPhaseRef = excludedPhaseShift.Phases.LookupByKey(pair.Key);
-                    if (ExcludedPhaseRef == null || ExcludedPhaseRef.Flags.HasAnyFlag(excludePhasesWithFlag))
-                        return true;
+                    if (ExcludedPhaseRef != null || !ExcludedPhaseRef.Flags.HasAnyFlag(excludePhasesWithFlag))
+                        return false;
                 }
 
-                return false;
+                return true;
             });
 
             if (other.Flags.HasFlag(PhaseShiftFlags.Inverse))