Method ParseAsUtc(string)
Parse DateTime from string (JSON/SQL) as UTC.
Example:
"2025-11-16T12:00:00Z" → DateTime(2025, 11, 16, 12, 0, 0, DateTimeKind.Utc)
"2025-11-16T12:00:00+03:00" → DateTime(2025, 11, 16, 9, 0, 0, DateTimeKind.Utc)
public static DateTime ParseAsUtc(string value)