fix(BT12-Dev): Variant 6개 SpriteRenderer 종별 idle01 override

PD: "자식 prefab의 sprite가 똑같음 — 종별 개별 sprite로 변경"

근본:
- Variant 6개 SpriteRenderer.sprite 모두 M001_idle01_0 (부모 Enemy.prefab 상속)
- Animator 재생 시 종별 sprite로 교체되나 초기·idle 정지 상태에서 동일

fix:
- M001 Wolf: M001_idle01_0
- M002 Bat: M002_idle01_0
- M003 ZombieM: M003_idle01_0
- M004 ZombieF: M004_idle01_0
- M005 Ghost: M005_idle01_0
- M006 Spider: M006_idle01_0

회귀 영역 X:
- Animator·OverrideController·Scene 16 instance·Player·Enemy 영역 영역 X

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Assets/Prefabs/Enemy_M002_Bat.prefab

@@ -8,6 +8,12 @@ PrefabInstance:
     serializedVersion: 3
     m_TransformParent: {fileID: 0}
     m_Modifications:
+    - target: {fileID: 1577774018119691272, guid: f158aa2be3df6489185ef721f6fd79c1,
+        type: 3}
+      propertyPath: m_Sprite
+      value: 
+      objectReference: {fileID: 4852648563935847630, guid: f8f1bd54f70dc914f9ff6999cff72846,
+        type: 3}
     - target: {fileID: 1605217082131907960, guid: f158aa2be3df6489185ef721f6fd79c1,
         type: 3}
       propertyPath: m_Controller

Assets/Prefabs/Enemy_M003_ZombieM.prefab

@@ -8,6 +8,12 @@ PrefabInstance:
     serializedVersion: 3
     m_TransformParent: {fileID: 0}
     m_Modifications:
+    - target: {fileID: 1577774018119691272, guid: f158aa2be3df6489185ef721f6fd79c1,
+        type: 3}
+      propertyPath: m_Sprite
+      value: 
+      objectReference: {fileID: -480068022978346209, guid: 2cd59e341ddcef747b2fdeed0e184687,
+        type: 3}
     - target: {fileID: 1605217082131907960, guid: f158aa2be3df6489185ef721f6fd79c1,
         type: 3}
       propertyPath: m_Controller

Assets/Prefabs/Enemy_M004_ZombieF.prefab

@@ -8,6 +8,12 @@ PrefabInstance:
     serializedVersion: 3
     m_TransformParent: {fileID: 0}
     m_Modifications:
+    - target: {fileID: 1577774018119691272, guid: f158aa2be3df6489185ef721f6fd79c1,
+        type: 3}
+      propertyPath: m_Sprite
+      value: 
+      objectReference: {fileID: 1142325901465378314, guid: 601020362ae2a214298ee67b288426c6,
+        type: 3}
     - target: {fileID: 1605217082131907960, guid: f158aa2be3df6489185ef721f6fd79c1,
         type: 3}
       propertyPath: m_Controller

Assets/Prefabs/Enemy_M005_Ghost.prefab

@@ -8,6 +8,12 @@ PrefabInstance:
     serializedVersion: 3
     m_TransformParent: {fileID: 0}
     m_Modifications:
+    - target: {fileID: 1577774018119691272, guid: f158aa2be3df6489185ef721f6fd79c1,
+        type: 3}
+      propertyPath: m_Sprite
+      value: 
+      objectReference: {fileID: 3001420397446177360, guid: f2ccd91debeaa624bb282fbaa4d0153b,
+        type: 3}
     - target: {fileID: 1605217082131907960, guid: f158aa2be3df6489185ef721f6fd79c1,
         type: 3}
       propertyPath: m_Controller

Assets/Prefabs/Enemy_M006_Spider.prefab

@@ -8,6 +8,12 @@ PrefabInstance:
     serializedVersion: 3
     m_TransformParent: {fileID: 0}
     m_Modifications:
+    - target: {fileID: 1577774018119691272, guid: f158aa2be3df6489185ef721f6fd79c1,
+        type: 3}
+      propertyPath: m_Sprite
+      value: 
+      objectReference: {fileID: 5433026174052882790, guid: 115d57f5258ccb74f86354a2cd28045d,
+        type: 3}
     - target: {fileID: 1605217082131907960, guid: f158aa2be3df6489185ef721f6fd79c1,
         type: 3}
       propertyPath: m_Controller