Currently, this test only tries to load a predefined icon, so the resource
compilation and linking can be completely removed from the meson.build and
it still passes.
Change to try to load the icon contained in the resources we compile.
In this case, the arguments to MinGW windres will contain spaces and
the test will definitely fail, so just skip it.
This effectively means that manually running the test will be fine, but
running it via run_project_tests.py will always fail (skip).