src/vs/workbench/common/notifications.ts/NotificationViewItem/setActions
class NotificationViewItem:	private setActions(actions: INotificationActions = { primary: [], secondary: [] }): void {
		this._actions = {
			primary: Array.isArray(actions.primary) ? actions.primary : [],
			secondary: Array.isArray(actions.secondary) ? actions.secondary : []
		};

		this._expanded = actions.primary && actions.primary.length > 0;
	}