test: Fix expected snackbar message in `SettingsViewModelTest` #1944

Job	Run time
Build (Unit-tests & Android-Lint)	5h 54m 26s
Android UI-tests on emulator (24, default)	7m 2s
Android UI-tests on emulator (28, default)	6h 5m 0s
Android UI-tests on emulator (26, default)	12m 16s
Android UI-tests on emulator (27, default)	12m 2s
Android UI-tests on emulator (25, default)	11m 51s
Android UI-tests on emulator (30, default)	9m 16s
Android UI-tests on emulator (29, default)	8m 5s
Android UI-tests on emulator (33, default)	7m 55s
Android UI-tests on emulator (32, default)	7m 34s
Android UI-tests on emulator (31, default)	6m 36s
Android UI-tests on emulator (34, default)	6m 47s
Android UI-tests on emulator (23, default)	8m 59s
Android UI-tests on emulator (35, default)	13m 40s
Android UI-tests on emulator (36, default)	8m 34s
	14h 0m 3s

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