fix: exclude RCT-Folly from prebuilt RN

Author: isekovanic

package/native-package/stream-chat-react-native.podspec

@@ -28,11 +28,15 @@ Pod::Spec.new do |s|
         "CLANG_CXX_LANGUAGE_STANDARD" => "c++17"
     }
     s.dependency "React-Codegen"
-    s.dependency "RCT-Folly"
+    # Prebuilt RN modes already handle Folly (or don't expose RCT-Folly podspec).
+    use_prebuilt_core = ENV['RCT_USE_PREBUILT_RNCORE'] == '1'
+    use_prebuilt_deps = ENV['RCT_USE_RN_DEP'] == '1'
+    unless use_prebuilt_core || use_prebuilt_deps
+      s.dependency "RCT-Folly"
+    end
     s.dependency "RCTRequired"
     s.dependency "RCTTypeSafety"
     s.dependency "ReactCommon/turbomodule/core"
     install_modules_dependencies(s)
   end
 end
-