Provider-scoped ref: <provider>:<workspace>/<name>. The reaction value.
e.g. "slack".
Provider workspace/team id (e.g. Slack team id T0123ABC).
Bare emoji name without colons (e.g. "party_parrot").
Image URL to render, or null for an alias (see aliasOf).
When this emoji aliases another, the target ref (id of the canonical emoji); else null.
True to mark the emoji removed (archive it) rather than upsert it.
A workspace custom emoji to cache so Plot can render and round-trip it as a reaction.
idis the provider-scoped ref stored on reactions, of the form<provider>:<workspace>/<name>(e.g.slack:T0123ABC/party_parrot).