refactor: FlexionSDKHelper 迁移至 ExtraPluginCfgs + 构建配置更新

- 删除 tysdk/Plugins/Android 下的 FlexionSDKHelper（已迁移至 ExtraPluginCfgs/flexion）
- 更新 AndroidManifest/mainTemplate.gradle/settingsTemplate.gradle 配置
- 更新 ChannelHelpers/ConfigManager 渠道配置
- 更新 tuyoosdk AAR 和 google-services.json

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

sdk-intergration/Assets/Plugins/Android/mainTemplate.gradle

@@ -13,14 +13,7 @@ android {
 }
 // Android Resolver Exclusions End
 android {
-	namespace "com.unity3d.player"
-}
-
-// Flexion 渠道专用：排除不需要的 AppsFlyer 模块
-// - purchase-connector: 基于 Google Play Billing，Flexion 不走 GP 计费，没用还增大包
-// 即使 Unity Android Resolver 下次又把 implementation 行写回来，这里的 exclude 也兜底排除
-configurations.all {
-    exclude group: 'com.appsflyer', module: 'purchase-connector'
+    namespace "com.unity3d.player"
 }
 
 dependencies {
@@ -38,17 +31,13 @@ dependencies {
     api "io.reactivex:rxandroid:1.2.1"
     api "io.reactivex:rxjava:1.1.9"
 
-    // Google Play In-App Review
+    // Google Play In-App Review 
     implementation 'com.google.android.play:review:2.0.1'
-    // Google Play Billing — tuyoosdk AAR references BillingManager during init
-    implementation 'com.android.billingclient:billing:6.0.1'
     implementation 'net.aihelp:android-aihelp-aar:5.3.+'
     
     implementation 'com.google.android.gms:play-services-auth:20.2.0'
-
-    // Flexion SDK (includes wrapped billing)
-    implementation("com.flexionmobile:sdk:4.0.1")
-
+    implementation('com.android.billingclient:billing:7.0.0')
+    
     implementation 'com.google.android.gms:play-services-basement:18.2.0'
     implementation 'androidx.fragment:fragment:1.3.6'
     implementation "org.jetbrains.kotlin:kotlin-reflect:1.3.41"
@@ -59,7 +48,7 @@ dependencies {
     
     implementation 'com.miui.referrer:homereferrer:1.0.0.6'
     
-    implementation platform('com.google.firebase:firebase-bom:32.7.4')
+    implementation platform('com.google.firebase:firebase-bom:34.6.0')
     implementation 'com.google.firebase:firebase-analytics'
 
     implementation('com.facebook.android:facebook-android-sdk:16.2.0')
@@ -70,8 +59,6 @@ dependencies {
     implementation "androidx.credentials:credentials-play-services-auth:1.3.0"
     implementation "com.google.android.libraries.identity.googleid:googleid:1.1.1"
 
-    coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:2.1.2"
-
 // Android Resolver Dependencies Start
     implementation 'com.android.installreferrer:installreferrer:2.1' // Assets/AppsFlyer/Editor/AppsFlyerDependencies.xml:7
     implementation 'com.applovin.mediation:facebook-adapter:[6.18.0.1]' // Assets/MaxSdk/Mediation/Facebook/Editor/Dependencies.xml:8
@@ -88,27 +75,14 @@ dependencies {
 // Android Resolver Dependencies End
 **DEPS**}
 
-// Android Resolver Exclusions Start
-android {
-  packagingOptions {
-      exclude ('/lib/armeabi/*' + '*')
-      exclude ('/lib/mips/*' + '*')
-      exclude ('/lib/mips64/*' + '*')
-      exclude ('/lib/x86/*' + '*')
-      exclude ('/lib/x86_64/*' + '*')
-  }
-}
-// Android Resolver Exclusions End
 android {
     ndkPath "**NDKPATH**"
 
     compileSdkVersion **APIVERSION**
     buildToolsVersion '**BUILDTOOLS**'
-
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
-        coreLibraryDesugaringEnabled true
     }
 
     defaultConfig {
@@ -117,7 +91,6 @@ android {
         ndk {
             abiFilters **ABIFILTERS**
         }
-        
         versionCode **VERSIONCODE**
         versionName '**VERSIONNAME**'
         consumerProguardFiles 'proguard-unity.txt'**USER_PROGUARD**