Fix ModelCheckpoint tests from incomplete PR

[awaelchli]

What does this PR do?

#19191 didn't run the full CI suite, for some inexplicable reason. It was merged without us noticing that the test never ran. What an epic fail?

In this PR, I simply fix the remaining tests that should have been updated in #19191.

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📚 Documentation preview 📚: https://pytorch-lightning--19205.org.readthedocs.build/en/19205/

cc @Borda @carmocca @awaelchli

[github-actions]

⚡ Required checks status: All passing 🟢

Groups summary

🟢 pytorch_lightning: Tests workflow

Check ID	Status
pl-cpu (macOS-11, lightning, 3.8, 1.12, oldest)	success	✅
pl-cpu (macOS-11, lightning, 3.9, 1.12)	success	✅
pl-cpu (macOS-11, lightning, 3.10, 1.13)	success	✅
pl-cpu (macOS-11, lightning, 3.10, 2.0)	success	✅
pl-cpu (macOS-11, lightning, 3.10, 2.1)	success	✅
pl-cpu (ubuntu-20.04, lightning, 3.8, 1.12, oldest)	success	✅
pl-cpu (ubuntu-20.04, lightning, 3.9, 1.12)	success	✅
pl-cpu (ubuntu-20.04, lightning, 3.10, 1.13)	success	✅
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.0)	success	✅
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	success	✅
pl-cpu (windows-2022, lightning, 3.8, 1.12, oldest)	success	✅
pl-cpu (windows-2022, lightning, 3.9, 1.12)	success	✅
pl-cpu (windows-2022, lightning, 3.10, 1.13)	success	✅
pl-cpu (windows-2022, lightning, 3.10, 2.0)	success	✅
pl-cpu (windows-2022, lightning, 3.10, 2.1)	success	✅
pl-cpu (macOS-11, pytorch, 3.8, 1.13)	success	✅
pl-cpu (ubuntu-20.04, pytorch, 3.8, 1.13)	success	✅
pl-cpu (windows-2022, pytorch, 3.8, 1.13)	success	✅
pl-cpu (macOS-12, pytorch, 3.11, 2.0)	success	✅
pl-cpu (macOS-12, pytorch, 3.11, 2.1)	success	✅
pl-cpu (ubuntu-22.04, pytorch, 3.11, 2.0)	success	✅
pl-cpu (ubuntu-22.04, pytorch, 3.11, 2.1)	success	✅
pl-cpu (windows-2022, pytorch, 3.11, 2.0)	success	✅
pl-cpu (windows-2022, pytorch, 3.11, 2.1)	success	✅

These checks are required after the changes to tests/tests_pytorch/checkpointing/test_checkpoint_callback_frequency.py, tests/tests_pytorch/models/test_restore.py, tests/tests_pytorch/plugins/test_checkpoint_io_plugin.py.

🟢 pytorch_lightning: Azure GPU

Check ID	Status
pytorch-lightning (GPUs) (testing Lightning | latest)	success	✅
pytorch-lightning (GPUs) (testing PyTorch | latest)	success	✅

These checks are required after the changes to tests/tests_pytorch/checkpointing/test_checkpoint_callback_frequency.py, tests/tests_pytorch/models/test_restore.py, tests/tests_pytorch/plugins/test_checkpoint_io_plugin.py.

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Thank you for your contribution! 💜

Note
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[codecov]

Codecov Report

Merging #19205 (05d78ab) into master (6ea0e2d) will decrease coverage by 22%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #19205     +/-   ##
=========================================
- Coverage      72%      49%    -22%     
=========================================
  Files         445      437      -8     
  Lines       37307    37154    -153     
=========================================
- Hits        26708    18247   -8461     
- Misses      10599    18907   +8308