multimedia/pipewire: unbreak with --auto-features=enabled

meson.build:277:0: ERROR: Dependency "avahi-client" not found, tried pkgconfig
meson.build:285:0: ERROR: Dependency "xfixes" not found, tried pkgconfig and cmake
meson.build:288:0: ERROR: Dependency "libcanberra" not found, tried pkgconfig and cmake
meson.build:380:0: ERROR: Dependency "lilv-0" not found, tried pkgconfig and cmake
spa/meson.build:81:2: ERROR: Dependency "libcamera" not found, tried pkgconfig and cmake
spa/plugins/meson.build:4:120: ERROR: Feature avb cannot be enabled: AVB support is only available on Linux
subprojects/media-session/meson.build:68:0: ERROR: Dependency "systemd" not found, tried pkgconfig and cmake
src/modules/meson.build:497:0: ERROR: C header 'roc/config.h' not found

PR: 270361