OSV-2023-849 Stack-buffer-overflow in ulocimp_toLanguageTag_74

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62348 Crash type: Stack-buffer-overflow WRITE 1 Crash state: ulocimptoLanguageTag74 icu74::Locale::toLanguageTag localemorphfuzzer.cpp...