message: Add "ba" as valid prefix for PaymentMethodId
  * add "ba" as a valid prefix for PaymentMethodId
  * add trailing underscores for the valid prefixes of PaymentMethodId to
  keep with style of other `def_id!`s
diff: @@ -502,7 +502,7 @@ def_id!(OrderReturnId, "orret_");
  def_id!(MandateId: String); // TODO: Figure out what prefix this id has
  def_id!(PaymentIntentId, "pi_");
  def_id!(PaymentLinkId: String);
  -def_id!(PaymentMethodId, "pm" | "card" | "src");
  +def_id!(PaymentMethodId, "pm_" | "card_" | "src_" | "ba_");
  def_id!(
  enum PaymentSourceId {
  Account(AccountId),
  