test: add tests relating to job attachment failures and empty output

[YutongLi291]

What was the problem/requirement? (What/Why)

For when the customer is syncing their job attachments, either while syncing the inputs, or the outputs, we need to make sure that the sync works as expected.

In particular, the functionalities that:

• If an input file is not found, but the customer specified that all input paths should exist, we should fail the job submission, as this indicates that the customer likely forgot to save an input file
• If there are no output files found in the output directory, the job should still pass. This path should not have any regressions in the line

  What was the solution? (How)

• Add two tests that test these functionalities
• Also added a lot more typing to the tests file

  What is the impact of this change?

  Better code coverage of the current features in worker-agent.

  How was this change tested?

  
  # Linux
  source .e2e_linux_infra.sh
  hatch run linux-e2e-test
  hatch run cross-os-e2e-test

Windows

source .e2e_windows_infra.sh hatch run windows-e2e-test hatch run cross-os-e2e-test

### Was this change documented?
No
### Is this a breaking change?
No

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[YutongLi291]

SonarCloud failing due to the typing I added.

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
3.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud