`UP029` false positive on relative imports from local `.builtins` module

[amyreese]

Summary

Discovered when running ruff on aioitertools, which reimplements several builtins as async-compatible variants, where UP029 incorrectly flags imports from the local .builtins module as unnecessary imports:

amethyst@espeon ~/workspace/aioitertools ruff+ » cat foo.py
from .builtins import next

amethyst@espeon ~/workspace/aioitertools ruff+ » uv run ruff check --isolated --select UP029 foo.py
UP029 Unnecessary builtin import: `next`
 --> foo.py:1:1
  |
1 | from .builtins import next
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
help: Remove unnecessary builtin import

Found 1 error.
No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).
> [1]

Version

ruff 0.14.3