[Field account_number] - Incorrectly saves bank details when account number is 7 characters long and country code is CN

[kunwardeep]

Testing Endpoint - http://preview.airwallex.com:30001
request - POST
Account number range when country code is CN is 8 to 20 characters. But the test passes for 7 characters as well
JSON payload

{ 
 payment_method: 'LOCAL',
 bank_country_code: 'CN',
 account_name: 'John Smith',
 account_number: '0123456'
}

Result

+ expected - actual

  {
  -  "success": "Bank details saved"
  +  "error": "Length of account_number should be between 8 and 20 when bank_country_code is 'CN'"
  }

To reproduce run test -

Save Bank Details with account_number field
  And bank country code - CN
    And invalid length