chore: 同步 FishNet 脚本宏与 Unity 6000.6 序列化更新

- ProjectSettings.asset: Standalone 平台写入宏 FISHNET;FISHNET_V4（FishNet 的 ScriptingDefines 在编辑器加载时自动添加）

- QualitySettings.asset: 质量档序列化格式升级 serializedVersion 4 -> 5，新增 meshLodThreshold

- DefaultVolumeProfile.asset: URP Bloom 组件新增 filter 覆盖项

- DefaultPrefabObjects.asset: FishNet 自动生成的预制体注册表

Assets/DefaultPrefabObjects.asset

@@ -0,0 +1,27 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 3ad70174b079c2f4ebc7931d3dd1af6f, type: 3}
+  m_Name: DefaultPrefabObjects
+  m_EditorClassIdentifier: FishNet.Runtime::FishNet.Managing.Object.DefaultPrefabObjects
+  _prefabs:
+  - {fileID: 4512293259955182956, guid: fe2b65b02f0484b41aa8cfa9fbbb0e1d, type: 3}
+  - {fileID: 4512293259955182956, guid: 35639798ad77fc145871588b25d66259, type: 3}
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Assets/DefaultPrefabObjects.asset.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b55ded965eb3fd84ba3b529733916884
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Settings/DefaultVolumeProfile.asset

@@ -379,6 +379,9 @@ MonoBehaviour:
   highQualityFiltering:
     m_OverrideState: 1
     m_Value: 0
+  filter:
+    m_OverrideState: 1
+    m_Value: 0
   downscale:
     m_OverrideState: 1
     m_Value: 0

ProjectSettings/ProjectSettings.asset

@@ -834,7 +834,8 @@ PlayerSettings:
   webWasm2023: 1
   webEnableSubmoduleStrippingCompatibility: 0
   webProgressiveAssetLoading: 0
-  scriptingDefineSymbols: {}
+  scriptingDefineSymbols:
+    Standalone: FISHNET;FISHNET_V4
   additionalCompilerArguments: {}
   platformArchitecture: {}
   scriptingBackend:

ProjectSettings/QualitySettings.asset

@@ -6,7 +6,7 @@ QualitySettings:
   serializedVersion: 5
   m_CurrentQuality: 1
   m_QualitySettings:
-  - serializedVersion: 4
+  - serializedVersion: 5
     name: Mobile
     pixelLightCount: 2
     shadows: 2
@@ -34,6 +34,7 @@ QualitySettings:
     adaptiveVsyncExtraA: 0
     adaptiveVsyncExtraB: 0
     lodBias: 1
+    meshLodThreshold: 1
     maximumLODLevel: 0
     enableLODCrossFade: 1
     streamingMipmapsActive: 0
@@ -59,7 +60,7 @@ QualitySettings:
     terrainMaxTrees: 50
     excludedTargetPlatforms:
     - Standalone
-  - serializedVersion: 4
+  - serializedVersion: 5
     name: PC
     pixelLightCount: 2
     shadows: 2
@@ -87,6 +88,7 @@ QualitySettings:
     adaptiveVsyncExtraA: 0
     adaptiveVsyncExtraB: 0
     lodBias: 2
+    meshLodThreshold: 1
     maximumLODLevel: 0
     enableLODCrossFade: 1
     streamingMipmapsActive: 0