update headers in the correct location

Author: VinayGuthal

firebase-ai/src/main/kotlin/com/google/firebase/ai/GenerativeModel.kt

@@ -86,7 +86,7 @@ internal constructor(
       apiKey,
       modelName,
       requestOptions,
-      "gl-kotlin/${KotlinVersion.CURRENT} fire/${BuildConfig.VERSION_NAME}",
+      "gl-kotlin/${KotlinVersion.CURRENT}-ai fire/${BuildConfig.VERSION_NAME}",
       firebaseApp,
       AppCheckHeaderProvider(TAG, appCheckTokenProvider, internalAuthProvider),
     ),

firebase-ai/src/main/kotlin/com/google/firebase/ai/ImagenModel.kt

@@ -61,7 +61,7 @@ internal constructor(
       apiKey,
       modelName,
       requestOptions,
-      "gl-kotlin/${KotlinVersion.CURRENT} fire/${BuildConfig.VERSION_NAME}",
+      "gl-kotlin/${KotlinVersion.CURRENT}-ai fire/${BuildConfig.VERSION_NAME}",
       firebaseApp,
       AppCheckHeaderProvider(TAG, appCheckTokenProvider, internalAuthProvider),
     ),

firebase-ai/src/main/kotlin/com/google/firebase/ai/LiveGenerativeModel.kt

@@ -79,7 +79,7 @@ internal constructor(
       apiKey,
       modelName,
       requestOptions,
-      "gl-kotlin/${KotlinVersion.CURRENT} fire/${BuildConfig.VERSION_NAME}",
+      "gl-kotlin/${KotlinVersion.CURRENT}-ai fire/${BuildConfig.VERSION_NAME}",
       firebaseApp,
       AppCheckHeaderProvider(TAG, appCheckTokenProvider, internalAuthProvider),
     ),