Add TypeAlias.assigned_stmts()

[jacobtylerwalls]

Type of Changes

	Type
✓	🐛 Bug fix
✓	✨ New feature

Description

This partially reverts commit a82384a. (I wasn't ready to add this until I knew what it was and whether the other two nodes needed it 😄 .) Only the TypeAlias can assign a name in the current scope.

Prevents this failure in pylint:

type X = float
if X:
    print(X)

  File "/Users/<user>/astroid/astroid/protocols.py", line 345, in assend_assigned_stmts
    return self.parent.assigned_stmts(node=self, context=context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'TypeAlias' object has no attribute 'assigned_stmts'

[codecov]

Codecov Report

Merging #2252 (3b6ce3d) into main (4c3bebb) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2252   +/-   ##
=======================================
  Coverage   92.80%   92.80%           
=======================================
  Files          94       94           
  Lines       10941    10942    +1     
=======================================
+ Hits        10154    10155    +1     
  Misses        787      787           

Flag	Coverage Δ
linux	92.61% <100.00%> (+<0.01%)	⬆️
pypy	90.89% <100.00%> (+<0.01%)	⬆️
windows	92.37% <100.00%> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
astroid/protocols.py	90.19% <ø> (ø)
astroid/nodes/node_classes.py	94.82% <100.00%> (+<0.01%)	⬆️