Fix GH-1132: Document mb_strlen invalid encoding behavior change in P…#5418

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GabrielCordeiroBarrosoTeles:fix-gh-1132-mb-strlen-invalid-encoding-changelog

Commits on Mar 9, 2026

Fix GH-1132: Document mb_strlen invalid encoding behavior change in PHP 8.0
GabrielCordeiroBarrosoTeles
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Address review: use exceptionname, clarify false return before 8.0
GabrielCordeiroBarrosoTeles
committed