Fix test errors and type checking errors induced by a previous PR.

[fengxizhou]

What does this PR do?

Fixes # 193 - Wrong Configuration Path Caused Test Failures

This PR fixes four things in a previous diff.

(1) A wrong file path for event_args_formats caused test errors. The fix is to update to the correct path. (2) A type checking error caused by Library stubs not installed for "yaml". The fix is to add the following lines into pyproject.toml file.

[[tool.mypy.overrides]]
module = "yaml"
ignore_missing_imports = true

(3) Update mypy setting in .pre-commit-config.yaml to workaround errors: "Source file found twice under different module names"

(4) Fix format warnings when importing sorces fbcode into github.

Before submitting

• [ x] Was this discussed/approved via a Github issue? (no need for typos, doc improvements)
  • [ ] N/A
• [ ] Did you write any new necessary tests?
  • [x ] N/A
• [ ] Did you make sure to update the docs?
  • [x ] N/A
• [x] Did you update the changelog?
  • [ ] N/A

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This pull request was exported from Phabricator. Differential Revision: D64839500

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D64839500