[BUG]: Performing a build with MORPHEUS_PYTHON_INPLACE_BUILD=ON and MORPHEUS_PYTHON_PERFORM_INSTALL=ON results in morpheus being installed in site-packages

[BUG]: Performing a build with MORPHEUS_PYTHON_INPLACE_BUILD=ON and MORPHEUS_PYTHON_PERFORM_INSTALL=ON results in morpheus being installed in site-packages #747