fix: SkillController 클립 자동 등록 필터 추가 및 Drog 프리팹 적용

- clipAutoRegisterFilter 필드 추가로 각 캐릭터별 클립 자동 등록 필터 분리
- 필터 좌우 _ 제거 로직 추가 (예: "_Drog_" → "Drog" 매칭)
- AutoRegisterPlayerClips → AutoRegisterClips으로 리네임
- Drog 프리팹에 clipAutoRegisterFilter = "_Drog_" 설정
- AC_Boss_Default의 Skill 상태 Motion을 baseSkillClip과 동일 에셋으로 수정

Assets/_Game/Prefabs/Bosses/Prefab_Boss_Drog.prefab

@@ -2144,15 +2144,16 @@ MonoBehaviour:
   ShowTopMostFoldoutHeaderGroup: 1
   animator: {fileID: 4019041888965840580}
   baseController: {fileID: 9100000, guid: 4bd980f1a222c5b468136f7e717925d5, type: 2}
-  baseSkillClip: {fileID: -7717634560727564301, guid: 4005a77aa7d531742b1de1bec27001b1, type: 3}
+  baseSkillClip: {fileID: 7400000, guid: ace5d7e8f405a8846b98bb956f0a9313, type: 2}
+  clipAutoRegisterFilter: _Drog_
   registeredClips:
-  - {fileID: -242498254790479478, guid: 585e8961b6c6e9f4ba96bdb4ffb2cbc3, type: 3}
-  - {fileID: 3627526391332626453, guid: 39aaec38fc96c4842b972f1e991e5a46, type: 3}
-  - {fileID: -7717634560727564301, guid: 4005a77aa7d531742b1de1bec27001b1, type: 3}
-  - {fileID: -8265974341663887746, guid: d3e4690f866332b43b86ee7005291cd0, type: 3}
-  - {fileID: 712281148059590495, guid: b590c58b50c3b554687b172862fa5d9d, type: 3}
-  - {fileID: 6888780564265376159, guid: 827dfeae95fdf6b41b78698f2e846b5f, type: 3}
-  - {fileID: -8752051743343580635, guid: 5eaeca917bbeb494eb14ad0e0552c42f, type: 3}
+  - {fileID: 7400000, guid: 58847e89d27d1b140b1075bba68445c0, type: 2}
+  - {fileID: 7400000, guid: 6e73cca667dfcd4499c84d1b6ba9d531, type: 2}
+  - {fileID: 7400000, guid: ace5d7e8f405a8846b98bb956f0a9313, type: 2}
+  - {fileID: 7400000, guid: 006b9541ce7dcb3469d79f9d9df3d6df, type: 2}
+  - {fileID: 7400000, guid: 0b70d6464b876144c84f2410c0359a4f, type: 2}
+  - {fileID: 7400000, guid: e35d6eb3ae2c5a146801c9dd399acd52, type: 2}
+  - {fileID: 7400000, guid: 4ff85a68bb491e143a001f3af82639ed, type: 2}
   - {fileID: 7400000, guid: c8fdea7dee0c6f04bbd27fe565071682, type: 2}
   debugMode: 1
   showAreaDebug: 1