[stdlib] Implement JSON.stringify(Object) multibyte strings handling · Pull Request !1662 · OpenHarmony/arkcompiler_runtime_core

Reason
We need to support multi-byte strings for object field values in JSON.stringify(Object)

Description
Add multi-byte strings support for object field values in JSON.stringify(Object)

Tests
All required tests passed. Results are available in ggwatcher

类型	指派人员	状态
审查		已完成 (1/1)
审查	@egavrin 由 CODEOWNERS 文件第 15 行指派为审查者	已完成 (1/1)
测试		已完成 (1/1)

OpenHarmony / arkcompiler_runtime_core .gitee-modal { width: 500px !important; }