Fix local notification not being shown on android #2543

Job	Run time
cli_packages (packages/rx_bloc_cli)	2m 41s
examples (examples/booking_app)	2m 42s
flutter_packages (packages/rx_bloc_list)	3m 1s
packages (packages/rx_bloc)	2m 3s
examples (examples/counter)	1m 50s
flutter_packages (packages/flutter_rx_bloc)	3m 19s
packages (packages/rx_bloc_test)	2m 32s
examples (examples/division)	1m 35s
packages (packages/rx_bloc_generator)	3m 33s
examples (examples/favorites_advanced/rx_bloc_favorites_advanced)	2m 6s
examples (examples/todoapp)	3m 7s
build	1s
	28m 30s

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