attribute invite codes to admins/moderators

when a regular user (who has the appropriate permissions) creates an
invite, we record that user's id in the `createdById` column

but when an admin/mod creates an invite via the control panel, we
didn't

now we do

packages/backend/src/server/api/endpoints/admin/invite/create.ts

@@ -68,6 +68,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			for (let i = 0; i < ps.count; i++) {
 				ticketsPromises.push(this.registrationTicketsRepository.insertOne({
 					id: this.idService.gen(),
+					createdBy: me,
+					createdById: me.id,
 					expiresAt: ps.expiresAt ? new Date(ps.expiresAt) : null,
 					code: generateInviteCode(),
 				}));