Clarify which criterias must be met for a backup rollback will be initiated

[AdmiringWorm]

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Is Your Feature Request Related To A Problem? Please describe.

There are some uncertainty of when a backup will be restored, or a package will be rolled back in case of upgrade and uninstall failures (or a forced installation).

Describe The Solution. Why is it needed?

We need to investigate when a rollback is being asked of the user, when a rollback will be automatically initiated, and when no rollback will occur.

Most likely, there is just a need to document the rollback behavior, but code changes may be needed if we find situations where it does not behave as expected.

Additional Context

No response

Related Issues

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