Fix a crash in undefined-loop-variable with enumerate()

[jacobtylerwalls]

Type of Changes

	Type
✓	🐛 Bug fix

Description

Regression in #7132
Closes #9875

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.80%. Comparing base (18f03b7) to head (38bc8d1).
Report is 100 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9876   +/-   ##
=======================================
  Coverage   95.80%   95.80%           
=======================================
  Files         174      174           
  Lines       18939    18939           
=======================================
  Hits        18144    18144           
  Misses        795      795           

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

[github-actions]

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

Effect on pytest:
The following messages are now emitted:

1. unbalanced-tuple-unpacking:
   Possible unbalanced tuple unpacking with sequence defined at line 2328 of argparse: left side has 1 label, right side has 0 values
   https://github.com/pytest-dev/pytest/blob/9446f024df846eefb8f2213d2854f7ec5552822a/src/_pytest/config/argparsing.py#L479

The following messages are no longer emitted:

1. unbalanced-tuple-unpacking:
   Possible unbalanced tuple unpacking with sequence defined at line 2325 of argparse: left side has 1 label, right side has 0 values
   https://github.com/pytest-dev/pytest/blob/9446f024df846eefb8f2213d2854f7ec5552822a/src/_pytest/config/argparsing.py#L479

This comment was generated for commit 38bc8d1