Payload for :face_overrides_changed events.
:face_overrides_changed
Sent by Buffer.Server when buffer-local face overrides change so the Editor can pre-compute the merged face registry without a GenServer call back into the buffer.
Buffer.Server
@type t() :: %Minga.Events.FaceOverridesChangedEvent{ buffer: pid(), overrides: %{required(String.t()) => keyword()} }