Domain mutes should autocomplete from list of known instances
The freeform field here is not great. Let's use the data from /api/v1/instance/peers to get a list of domains and then use typing completion to match a known domain name.
The freeform field here is not great. Let's use the data from /api/v1/instance/peers to get a list of domains and then use typing completion to match a known domain name.