Ensure WOLAPI COM ProgID registration and safe wide char conversion

[seer-by-sentry]

Fixes CLIENT-26M. The issue was that: WOLAPI COM object's missing ProgID registry entry causes null pointer dereference in wcstombs during system lookup.

• Added safe_wcstombs function to wchar_compat.h to provide a null-pointer-safe wrapper for wcstombs.
• Updated WideCharToMultiByte macro to use safe_wcstombs for improved robustness when converting wide characters to multi-byte strings.
• Implemented ensureWOLAPIProgIDRegistration function in wolInit.cpp to explicitly register WOLAPI COM object ProgIDs (WOLAPI.Chat).
• Called ensureWOLAPIProgIDRegistration before COM operations in checkInstalledWolapiVersion to prevent crashes on Windows versions that strictly validate COM registry entries.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 8425323

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