Check if it's possible to import a spend without the CPFP output

[danielabrozzoni]

Opening this issue as a reminder, I should double-check that importing a spend without the cpfp output is not possible

[danielabrozzoni]

Aaaand it's possible 😭

rsm updatespendtx cHNidP8BAH0CAAAAAWQYLaJLKOGr2VUPYwlZz5UStWUr7SlxGT+K8S8ubTM1AAAAAAADAAAAAoDw+gIAAAAAFgAUKB/hlNJv8KljBZr5anTJEwgmhVh/gPgCAAAAACIAIHXyaRd0yBZ3gxhGsCgiAOKIssWXELWPdDGD1JJVB9vFAAAAAAABASvJt/MFAAAAACIAIKhAWcoy8EwVBnWnLxovA+lFTqlQLH8soZT1Uyn//Og7AQMEAQAAAAEFqCECApM6sQN+rQqkp4WMbUnWcF4fs7xfZrAJGK97nwDs1SasUYdkdqkUcqlfIq+aG664UvmpUnL4wh2Y8mSIrGt2qRS2ya24nIyTcmyD4qG12UeJ13uVYYisbJNSh2dSIQMPZLkiruL9WX8QS8bLO2cPHKLGxJsQcaGmwBBXXZT+WiECq+R1sZnsPWL6V2+u4WozT9uG/7JtznW+zrqu3zKKw/5Sr1OyaAAAAQFHUiECWC3tv0T0ZWTl2M2wZ1NtYOvjTNHRgBz/Ubv516wom0MhA0cE3stVtaqI/9HvXQY2YkjBMU4ZZVETb/FOq4u6SkkOUq4A
{
  "result": {}
}