More nopch build fixes

(cherry picked from commit a4328a92e9)

src/server/game/AI/CoreAI/UnitAI.h

@@ -19,6 +19,7 @@
 #define TRINITY_UNITAI_H
 
 #include "Errors.h"
+#include "Hash.h"
 #include "ObjectGuid.h"
 #include "SharedDefines.h"
 #include "SpellDefines.h"

src/server/game/Entities/Object/Updates/UpdateField.h

@@ -924,7 +924,7 @@ namespace UF
             return !!_value;
         }
 
-        operator bool const() const
+        operator bool() const
         {
             return has_value();
         }

src/server/game/Quests/QuestDef.h

@@ -21,6 +21,7 @@
 #include "Common.h"
 #include "DatabaseEnvFwd.h"
 #include "EnumFlag.h"
+#include "Hash.h"
 #include "LootItemType.h"
 #include "Optional.h"
 #include "RaceMask.h"