Handle Play Store signing error

[kitallis]

Problem

We've recently come across an issue like this:

The Android App Bundle was not signed. Please sign the bundle using jarsigner. (Installations::Google::PlayDeveloper::Error)

Steps to Reproduce

This is happening in case an incorrectly signed AAB is generated by the CI workflow and Tramline receives an error from Play Store whilst uploading it.

Expected behavior

We can't do anything about this at runtime. But we can handle the error and show an appropriate message to the user.

Additional context

Sentry