Queue activity results before React context is ready

[sorinc03]

Summary

Fixes #52114.

When ReactHostImpl.onActivityResult is invoked before the bridgeless React context is ready, the result is currently soft-exceptioned and dropped. This can lose results from external activities if the host activity is recreated before React has finished starting.

This change queues activity results while the React context is unavailable, replays them once the context is created, and clears queued results when the host is destroyed.

Changelog:

[ANDROID] [FIXED] - Queue activity results received before bridgeless React context initialization

Test plan

./gradlew :packages:react-native:ReactAndroid:testDebugUnitTest --tests com.facebook.react.runtime.ReactHostTest -Preact.internal.useHermesNightly=false

Also ran:

git diff --check