Steps to reproduce:

1. flutter create dummy; cd dummy
2. flutter build apk
3. Check that LICENSE file does not contain "android_alarm_manager": grep android_alarm_manager build/app/intermediates/flutter/release/flutter_assets/LICENSE
4. Add android_alarm_manager: any to the pubspec.yaml file's dependencies section.
5. flutter build apk
6. Check that build/app/intermediates/flutter/release/flutter_assets/LICENSE now does contain "android_alarm_manager".
7. Check that LICENSE file does not contain "Bui": grep Bui build/app/intermediates/flutter/release/flutter_assets/LICENSE
8. Add flutter_local_notifications: any to the pubspec.yaml file's dependencies section.
9. flutter build apk
10. Check that build/app/intermediates/flutter/release/flutter_assets/LICENSE now does contain "Bui".
11. Run `flutter clean; flutter build apk;
12. Check that build/app/intermediates/flutter/release/flutter_assets/LICENSE now does contain "Bui".

For some reason, steps 10 and 12 give different results.