cync_lan (Home Assistant custom_component) v2.5.1

Fixes group power switches all showing up as "Cync LAN Bridge". Every one
of them fell back to the bridge's own device name instead of " power",
so a home with several groups got several identically-named switches with
nothing to tell them apart.

The cause: these switches declared a translated name but not
has_entity_name, and Home Assistant only applies translated entity names
when that is set. Every other bridge-attached entity in the integration either
sets it or sets a plain name; this one did neither.

Only affects the experimental group power switches - reported from a real
install.