Fix several rules to handle deferred annotations #20747
Description
Several rules exhibit very different behavior in the presence of deferred annotations, whether from an explicit from __future__ import annotations or on Python 3.14. These include:
- FAST001
- FAST003
- A003
- PTH210
- RUF001
You can see the effect of switching the Python version from 3.13 to 3.14 in this commit from #20725.
In addition to the tests modified in the commit above, each of these rules also has a new assert_diagnostics_diff test:
To fix this issue, we should remove all of these diffs.
Micha and Dylan observed that semantic.resolve_name seems to be returning the wrong results now (#20725 (comment)), and I think they suggested possibly making these checks deferred so that we can resolve these lookups differently.
Unless the changes end up being quite small, I think it could make sense to tackle these with one PR per rule.