Resolve used-before-assignment false negative when a function is defined under TYPE_CHECKING

[zenlyj]

Type of Changes

	Type
✓	🐛 Bug fix
	✨ New feature
	🔨 Refactoring
	📜 Docs

Description

Raise used-before-assignment when a function is defined under TYPE_CHECKING and used later.

Refs #10028

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.80%. Comparing base (5feface) to head (a20eb06).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10034   +/-   ##
=======================================
  Coverage   95.80%   95.80%           
=======================================
  Files         174      174           
  Lines       18935    18949   +14     
=======================================
+ Hits        18141    18155   +14     
  Misses        794      794           

Files with missing lines	Coverage Δ
pylint/checkers/variables.py	97.23% <100.00%> (+0.02%)	⬆️

[github-actions]

🤖 Effect of this PR on checked open source code: 🤖

Effect on home-assistant:
The following messages are now emitted:

1. possibly-used-before-assignment:
   Possibly using variable 'touch_event_callback' before assignment
   https://github.com/home-assistant/core/blob/9d0701a62b63d95abac9c5da36039f18ed0bd8c7/homeassistant/components/nanoleaf/__init__.py#L77

This comment was generated for commit a20eb06