PHPStan/Psalm annotations for Yii::getAlias

[max-s-lab]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues	#20393

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.43%. Comparing base (cde0596) to head (33d4ec9).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #20394   +/-   ##
=========================================
  Coverage     64.43%   64.43%           
  Complexity    11446    11446           
=========================================
  Files           433      433           
  Lines         37457    37457           
=========================================
  Hits          24137    24137           
  Misses        13320    13320           

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[samdark]

Thank you!