Dispatched when members are added or removed from a thread.
Converts a raw Discord payload into this event struct.
@type t() :: %EDA.Event.ThreadMembersUpdate{ added_members: [map()] | nil, guild_id: String.t() | nil, id: String.t() | nil, member_count: integer() | nil, removed_member_ids: [String.t()] | nil }
@spec from_raw(map()) :: t()