[11.x] Refactor and add remaining test cases for the DatabaseUuidFailedJobProviderTest class

[kevinb1989]

The Illuminate\Tests\Queue\DatabaseFailedJobProviderTest class already have the amazing structure from @timacdonald. I just want to do two things:

• Extract the code to create a new provider to a new method.
• Write test cases for the following methods:
  • ids
  • all
  • find
  • forget
  • flush
  • prune