Add helper to iterate over all annotation nodes of Arguments

[cdce8p]

Description

In pylint there are two cases where we iterate over all annotations nodes of Arguments specifically to check if a specific node is one of them. Getting that check right is sometimes tricky as it's easy to forget something. Add a helper method get_annotations() similar to the existing get_children() to return an iterator of all annotation nodes.

https://github.com/pylint-dev/pylint/blob/91d57ad7ed5ca52efafa232dda996757ccf14352/pylint/checkers/utils.py#L1619-L1626
https://github.com/pylint-dev/pylint/blob/91d57ad7ed5ca52efafa232dda996757ccf14352/pylint/checkers/variables.py#L2213-L2220

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.35%. Comparing base (92e320f) to head (4ba76f1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2860   +/-   ##
=======================================
  Coverage   93.34%   93.35%           
=======================================
  Files          92       92           
  Lines       11176    11190   +14     
=======================================
+ Hits        10432    10446   +14     
  Misses        744      744           

Flag	Coverage Δ
linux	93.21% <100.00%> (+<0.01%)	⬆️
pypy	93.35% <100.00%> (+<0.01%)	⬆️
windows	93.33% <100.00%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
astroid/nodes/node_classes.py	95.01% <100.00%> (+0.03%)	⬆️

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[Pierre-Sassoulas]

LGTM but probably need some coverage.

[cdce8p]

LGTM but probably need some coverage.

Yeah, working on it.