Describe the bug
When running tests/test_ssh2, either of these errors happen:

• libssh2_session_handshake failed (-12) LIBSSH2_ERROR_DECRYPT: Failed to get response to ssh-userauth request
  https://github.com/libssh2/libssh2/actions/runs/4851558817/jobs/8645524071#step:7:1087

• libssh2_session_handshake failed (-44) LIBSSH2_ERROR_ENCRYPT: Unable to ask for ssh-userauth service
  https://github.com/libssh2/libssh2/actions/runs/4847366472/jobs/8637553577#step:7:1052
  https://github.com/libssh2/libssh2/actions/runs/4846389013/jobs/8635903998#step:7:96

This is the first packet with encryption.

To Reproduce
Run tests/test_ssh2 against an sshd server.

Expected behavior
Same result as with OpenSSL/LibreSSL backends:
https://github.com/libssh2/libssh2/actions/runs/4847366472/jobs/8637553403#step:7:72
https://github.com/libssh2/libssh2/actions/runs/4847366472/jobs/8637553480#step:7:72
https://github.com/libssh2/libssh2/actions/runs/4851558817/jobs/8645523936#step:7:71

Version:

• OS and version: macOS (possibly others)
• libssh2 version: 1.10.1-DEV
• crypto backend: wolfSSL v5.6.0