fix(AliasPlugin): correct wildcard replacement in multi-target aliases

[xiaoxiaojx]

When processing multi-target wildcard aliases like:
The current code uses item.alias (the entire array) instead of alias (current item being processed).
Result:

item.alias.toString() → "/src/utils/*,/src/components/*".replace("*", "button") → "/src/utils/button,/src/components/*" ❌

Expected:

alias.toString() → "/src/utils/*".replace("*", "button") → "/src/utils/button" ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.13%. Comparing base (f1bc1c2) to head (4abeddb).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #465   +/-   ##
=======================================
  Coverage   93.13%   93.13%           
=======================================
  Files          45       45           
  Lines        2155     2155           
  Branches      654      654           
=======================================
  Hits         2007     2007           
  Misses        119      119           
  Partials       29       29           

Flag	Coverage Δ
integration	93.13% <100.00%> (ø)

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