Charlie Marsh ad265fa6bc Allow f-string modifications in line-shrinking cases (#7818) ... ## Summary This PR resolves an issue raised in https://github.com/astral-sh/ruff/discussions/7810, whereby we don't fix an f-string that exceeds the line length _even if_ the resultant code is _shorter_ than the current code. As part of this change, I've also refactored and extracted some common logic we use around "ensuring a fix isn't breaking the line length rules". ## Test Plan `cargo test`		2023-10-04 15:24:07 -04:00
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test	Allow f-string modifications in line-shrinking cases (#7818)	2023-10-04 15:24:07 -04:00