src/vs/workbench/contrib/comments/browser/reactionsAction.ts/ReactionActionViewItem/updateLabel
class ReactionActionViewItem:	override updateLabel(): void {
		if (!this.label) {
			return;
		}

		let action = this.getAction() as ReactionAction;
		if (action.class) {
			this.label.classList.add(action.class);
		}

		if (!action.icon) {
			let reactionLabel = dom.append(this.label, dom.$('span.reaction-label'));
			reactionLabel.innerText = action.label;
		} else {
			let reactionIcon = dom.append(this.label, dom.$('.reaction-icon'));
			reactionIcon.style.display = '';
			let uri = URI.revive(action.icon);
			reactionIcon.style.backgroundImage = dom.asCSSUrl(uri);
			reactionIcon.title = action.label;
		}
		if (action.count) {
			let reactionCount = dom.append(this.label, dom.$('span.reaction-count'));
			reactionCount.innerText = `${action.count}`;
		}
	}