At least in Meson 0.49, the target['install_name'] is a string, not a list, so
the heuristics declared in the is_library_target_and_not_plugin() can't apply
because Python is actually happy to iterate over a string without any warning.
In the case of wine, the env can not be uninstalled, also developers
do not necessiraly care about the fact that it is "uninstalled", the
important thing is that it is a development environment, meaning
that they can work on GStreamer or with GStreamer in the environment.
I still keep the `uninstalled` target to avoid changing people's
habits for now.