`typing.no_type_check` decorator is not being considered

pyflakes does not seem to take into consideration the typing.no_type_check decorator and throws F821 undefined name error,
Example (from Uplink's documentation, a great library with a custom use case for type annotation):

from uplink import Consumer, get, Path, Query
from typing import no_type_check


class GitHub(Consumer):
    """A Python Client for the GitHub API."""
    @get("users/{user}/repos")
    @no_type_check
    def get_repos(self, user: Path, sort_by: Query("sort")):
        """Get user's public repositories."""

Results of running pyflakes:

➜ pyflakes flake8_poc.py
flake8_poc.py:9:52 undefined name 'sort'

This raises no error when running using mypy for example.

Start by reproducing the reported example with pyflakes and trace how decorator annotations are analyzed, especially the typing.no_type_check case. The change is complete when the example no longer reports F821 for sort while ordinary undefined-name checks remain intact; no implementation files or tests are named in the issue.