buildTemplateData(entries: EmailEntry[],currency: string,ticketUrl: string,options?: { hidePackageMembers?: boolean; },): Promise<TemplateData>
Build the data object exposed to Liquid templates. Rows booked through a
package head the email by the package's name (listing_names); an order may
carry several bundles beside plain rows. hidePackageMembers (set for the
buyer's confirmation, not the admin notification) collapses each HIDDEN
package's member rows into one package row so members aren't revealed —
whatever else the order carries beside them.
entries: EmailEntry[]
Promise<TemplateData>