When testing Xcode 26.2, The macos_objc_integration_tests for the pigeon package are failing with a StateError.

Specifically, the test "event channels handle multiple instances" failed with the message: Bad state: Cannot add new events after calling close

https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20custom_package_tests%20master/25672/overview