Custom matches not respected anymore after switching from pewire-media-session to wireplumber

• Fedora 35
• pipewire 0.3.35
• wireplumber 0.4.1

I have a custom matches entry in my /etc/pipewire/media-session.d/alsa-monitor.conf to automatically switch over to my docking station speakers when connected. It looks as follows:

    {
        matches = [
            {
                node.name = "alsa_output.usb-Generic_USB_Audio_200901010001-00.HiFi__hw_Dock_1__sink"
            }
        ]
        actions = {
            update-props = {
                priority.session       = 10000
            }
        }
    }

However, after switching from pipewire-media-session to wireplumber this does not seem to have any effect anymore. How is one supposed to achieve this behavior with wireplumber?

pactl list sinks also shows, that the priority is not applied to this sink correctly.

For the above line out it shows

Sink #103
	State: SUSPENDED
	Name: alsa_output.usb-Generic_USB_Audio_200901010001-00.HiFi__hw_Dock_1__sink
	Description: USB Audio Line Out
	Driver: PipeWire
	Sample Specification: s24le 2ch 48000Hz
	Channel Map: front-left,front-right
	Owner Module: 4294967295
	Mute: no
	Volume: front-left: 48287 /  74% / -7,96 dB,   front-right: 48287 /  74% / -7,96 dB
	        balance 0,00
	Base Volume: 65536 / 100% / 0,00 dB
	Monitor Source: alsa_output.usb-Generic_USB_Audio_200901010001-00.HiFi__hw_Dock_1__sink.monitor
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE DECIBEL_VOLUME LATENCY 
	Properties:
		alsa.card = "3"
		alsa.card_name = "WD15 Dock"
		alsa.class = "generic"
		alsa.device = "1"
		alsa.driver_name = "snd_usb_audio"
		alsa.id = "USB Audio"
		alsa.long_card_name = "Dell-WD15-Dock"
		alsa.mixer_device = "_ucm0008.hw:Dock"
		alsa.name = "USB Audio #1"
		alsa.resolution_bits = "24"
		alsa.subclass = "generic-mix"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		api.alsa.card.longname = "Dell-WD15-Dock"
		api.alsa.card.name = "WD15 Dock"
		api.alsa.open.ucm = "true"
		api.alsa.path = "hw:Dock,1"
		api.alsa.pcm.card = "3"
		api.alsa.pcm.stream = "playback"
		audio.channels = "2"
		audio.position = "FL,FR"
		card.profile.device = "0"
		device.api = "alsa"
		device.class = "sound"
		device.id = "98"
		device.profile.description = "Line Out"
		device.profile.name = "HiFi: hw:Dock,1: sink"
		device.routes = "1"
		factory.name = "api.alsa.pcm.sink"
		media.class = "Audio/Sink"
		device.description = "USB Audio Line Out"
		node.name = "alsa_output.usb-Generic_USB_Audio_200901010001-00.HiFi__hw_Dock_1__sink"
		node.nick = "WD15 Dock"
		node.pause-on-idle = "false"
		object.path = "alsa:pcm:3:hw:Dock,1:playback"
		priority.driver = "728"
		priority.session = "728"
		factory.id = "18"
		client.id = "51"
		node.driver = "true"
		factory.mode = "merge"
		audio.adapt.follower = ""
		library.name = "audioconvert/libspa-audioconvert"
		object.id = "103"
	Ports:
		[Out] Line: Line Out (type: Line, priority: 200, availability unknown)
	Active Port: [Out] Line
	Formats:
		pcm