Improve ODK-X Services Test Coverage: Write Test for service class in the Application package

[Agaba-derrick]

The Services class in the org.opendatakit/services/application package extends ToolAwareApplication and implements IToolAware. This class manages Firebase Analytics initialization and logging upon app creation, and includes a deprecated method to get a context instance.

Tasks for this issue:

• Write unit tests to ensure the correct initialization and logging of Firebase Analytics events.
• Test the singleton implementation and ensure the _please_dont_use_getInstance() method behaves as expected, even though it is deprecated.
• Verify that the getApkDisplayNameResourceId() method returns the correct resource ID.

This issue aims to improve code coverage and ensure the stability of the Services class functionality. fix for #504

[Agaba-derrick]

@wbrunette @Lamouresparus am working on this ticket

[Lamouresparus]

@Agaba-derrick I will suggest that you work on #507 first, as that is more beginner friendly, before working on this. But if you feel confident, you can go ahead :)