[PATCH v3 0/3] MR6002: secur32: Implement the NameDisplay name format of the GetUserNameExW method

[Egor Poleshko (＠somedevfox)]

This merge request implements the third name format ("[NameDisplay](https://learn.microsoft.com/en-us/windows/win32/api/secext/ne-secext-extende...)") of the GetUserNameExW method.

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  v3: secur32: GetUserNameExW(3) is supposed to return ERROR_MORE_DATA if the buffer is too small, not ERROR_INSUFFICIENT_BUFFER
      secur32/tests: Add GetUserNameExW(3) specific test cases
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/6002