Enhance cpp/overflow-calculated - detect out-of-bounds write caused by passing the buffer size in bytes (using sizeof) instead of the number of elements to wcsftime, allowing the function to overrun the allocated buffer.

Enhance cpp/overflow-calculated - detect out-of-bounds write caused by passing the buffer size in bytes (using sizeof) instead of the number of elements to wcsftime, allowing the function to overrun the allocated buffer. #5869