FindProtobuf: can't detect the presence of libprotobuf-lite if libprotobuf isn't available
After taking #21161 (closed) into account. FindProtobuf is unable to tell me if libprotobuf-lite is available if libprotobuf isn't.
In https://gitlab.kitware.com/cmake/cmake/-/blob/ca5babfd7a1da8e32f927ad086fdd91c2b09853b/Modules/FindProtobuf.cmake#L629 it just checks for the presence of libprotobuf, and simply fails if it isn't there even if libprotobuf-lite is available.