bluez5: Try to reconnect profiles after adapter powered on

We already try to reconnect to our known devices when bluez5 appears on
the bus or when the (pipewire) session gets started, so let's also do
that as soon as the bluetooth adapter gets powered on.
45 jobs for bluez-reconnect-on-power-on in 7 minutes and 34 seconds (queued for 4 seconds)
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