multimedia/pipewire: force rebuild consumers after 8691df3a5142

ABI has changed: pw_{,de}init -> pipewire_{,de}init. As PipeWire
support is often runtime-optional the breakage maybe hard to notice.

ERROR kooha::backend::screencast_portal > Error from screencast call: Zbus(MethodError(OwnedInterfaceName(InterfaceName(Str("org.freedesktop.DBus.Error.UnknownMethod"))), Some("No such interface “org.freedesktop.portal.ScreenCast” on object at path /org/freedesktop/portal/desktop"), Msg { type: Error, sender: UniqueName(Str(":1.397")), reply-serial: 18, body: Signature: [

s (115),

] }))

ld-elf.so.1: /usr/local/libexec/xdg-desktop-portal-wlr: Undefined symbol "pw_init"

PR: 259621
(cherry picked from commit e92349ca0c3d9b0ccdb1e5d40b3b536b39f56890)