Support narrowing for if (y = x) assignment in condition#428
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LocalVariableWriteNode now provides narrowings for the assigned variable, so `if (y = x)` correctly narrows y to non-nil in the then branch. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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LocalVariableWriteNode now provides narrowings for the assigned variable, so
if (y = x)correctly narrows y to non-nil in the then branch.