gnome: Filter all compiler and linker flags
gnome: Filter all compiler and linker flags

When sending them to the introspection scanner, we must always filter
all compiler and linker flags, because g-ir-scanner does not accept any
random argument but only a specific subset.

Fixes: #8876

mesonbuild/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,mesonbuild/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,jpakkane/meson,mesonbuild/meson,mesonbuild/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,pexip/meson,jpakkane/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,pexip/meson,jpakkane/meson,pexip/meson,jpakkane/meson,jpakkane/meson