qtopcua is confused about SSL and OpenSSL

Simply said the build scripts of qtopcua are confused about QT_FEATURE_ssl and QT_FEATURE_openssl. It should be using QT_FEATURE_openssl but is using QT_FEATURE_ssl. Leading to e.g.:
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(107): error C3861: 'q_EVP_PKEY_CTX_new_id': identifier not found
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(112): error C2065: 'q_EVP_PKEY_CTX_free': undeclared identifier
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(114): error C3861: 'q_EVP_PKEY_keygen_init': identifier not found
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(119): error C3861: 'q_EVP_PKEY_CTX_set_rsa_keygen_bits': identifier not found
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(124): error C3861: 'q_EVP_PKEY_keygen': identifier not found
E:\vcpkg_folders\qt6-update\buildtrees\qtopcua\src\qtopcua-v6-40e246f45a\src\opcua\x509\qopcuakeypair_openssl.cpp(177): error C2027: use of undefined type 'evp_pkey_st'
affected lines:
https://github.com/qt/qtopcua/blob/a44543941a7aed6c6f29d15469623f053626d40a/src/opcua/CMakeLists.txt#L95
https://github.com/qt/qtopcua/blob/a44543941a7aed6c6f29d15469623f053626d40a/src/opcua/CMakeLists.txt#L113