ruff

07380e06 - ruff_python_formatter: add docstring-code-line-width internal setting (#9055)

ruff_python_formatter: add docstring-code-line-width internal setting (#9055) ## Summary This does the light plumbing necessary to add a new internal option that permits setting the line width of code examples in docstrings. The plan is to add the corresponding user facing knob in #8854. Note that this effectively removes the `same-as-global` configuration style discussed [in this comment](https://github.com/astral-sh/ruff/issues/8855#issuecomment-1847230440). It replaces it with the `{integer}` configuration style only. There are a lot of commits here, but they are each tiny to make review easier because of the changes to snapshots. ## Test Plan I added a new docstring test configuration that sets `docstring-code-line-width = 60` and examined the differences.