meson: Fix build of static plugins
While we were correctly skipping the plugins that couldn't be built statically, we were still adding their names to the list and the .pc list causing them to still get built.
spawned off from !588 (merged)
While we were correctly skipping the plugins that couldn't be built statically, we were still adding their names to the list and the .pc list causing them to still get built.
spawned off from !588 (merged)