[flake8-bugbear] Avoid adding default initializers to stubs (B006)

[Philipp-Thiel]

Summary

Adapts the fix for rule B006 to no longer modify the body of function stubs, while retaining the change in method signature.

Test Plan

The existing tests for B006 were adapted to reflect this change in behavior.

Relevant issue

#10083

[github-actions]

ruff-ecosystem results

Linter (stable)

ℹ️ ecosystem check encountered linter errors. (no lint changes; 1 project error)

indico/indico (error)

ruff failed
  Cause: Rule `S410` was removed and cannot be selected.

Linter (preview)

ℹ️ ecosystem check encountered linter errors. (no lint changes; 1 project error)

indico/indico (error)

ruff check --no-cache --exit-zero --ignore RUF9 --output-format concise --preview

ruff failed
  Cause: Rule `S410` was removed and cannot be selected.

Formatter (stable)

ℹ️ ecosystem check encountered format errors. (no format changes; 2 project errors)

indico/indico (error)

ruff failed
  Cause: Rule `S410` was removed and cannot be selected.

openai/openai-cookbook (error)

warning: Detected debug build without --no-cache.
error: Failed to read examples/How_to_handle_rate_limits.ipynb: Expected a Jupyter Notebook, which must be internally stored as JSON, but this file isn't valid JSON: trailing comma at line 47 column 4

Formatter (preview)

ℹ️ ecosystem check encountered format errors. (no format changes; 2 project errors)

indico/indico (error)

ruff format --preview

ruff failed
  Cause: Rule `S410` was removed and cannot be selected.

openai/openai-cookbook (error)

ruff format --preview

warning: Detected debug build without --no-cache.
error: Failed to read examples/How_to_handle_rate_limits.ipynb: Expected a Jupyter Notebook, which must be internally stored as JSON, but this file isn't valid JSON: trailing comma at line 47 column 4

[charliermarsh]

Thanks!