ruff

85f78717 - [`flake8-builtins`] Default to non-strict checking (`A005`) (#16125)

[`flake8-builtins`] Default to non-strict checking (`A005`) (#16125) ## Summary This PR changes the default value of `lint.flake8-builtins.builtins-strict-checking` added in https://github.com/astral-sh/ruff/pull/15951 from `true` to `false`. This also allows simplifying the default option logic and removes the dependence on preview mode. https://github.com/astral-sh/ruff/issues/15399 was already closed by #15951, but this change will finalize the behavior mentioned in https://github.com/astral-sh/ruff/issues/15399#issuecomment-2587017147. As an example, strict checking flags modules based on their last component, so `utils/logging.py` triggers A005. Non-strict checking checks the path to the module, so `utils/logging.py` is allowed (this is the example and desired behavior from #15399 exactly) but a top-level `logging.py` or `logging/__init__.py` is still disallowed. ## Test Plan Existing tests from #15951 and #16006, with the snapshot updated in `a005_module_shadowing_strict_default` to reflect the new default.