[formatter] Stabilize fix for single-with-item formatting with trailing comment #16603
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Summary
This PR stabilizies the fix for #14001
We try to only make breaking formatting changes once a year. However,
the plan was to release this fix as part of Ruff 0.9 but I somehow missed it when promoting all other formatter changes.
I think it's worth making an exception here considering that this is a bug fix, it improves readability, and it should be rare
(very few files in a single project). Our version policy explicitly allows breaking formatter changes in any minor release and the idea of only making breaking formatter changes once a year is mainly to avoid multiple releases throughout the year that introduce large formatter changes
Closes #14001
Test Plan
Updated snapshot