Describe the bug
ECC keys generated by the Generate PGP Key Pair operation are invalid because algorithm and curve type have not been set.

This results in PGP Encrypt operations using such a key failing with an obscure internal kbpgp message as per #1440, #1923.

To Reproduce
See #1440 for example

Expected behaviour
Key should have subkeys for signing/certification and encryption. See https://github.com/zapu/kbpgp/blob/4f61781c93798c0527f250332f50c47b73e878ca/test/files/cv25519.iced#L239-L249 for a reference example.

Additional context
Long term it would probably be better to replace the kbpgp library with a more frequently updated/modern library such as openpgp.js