[Evmos]: Fix signing, prehash, compile for Native Evmos

[satoshiotomakan]

Description

Fix signing, prehash, compile for Native Evmos.

Breaking changes

publicKeyType was changed for Evmos in registry.json to secp256k1 as it's used in transaction compiling.
Please also note that secp256k1Extended still needs to be used to create an address.

How to test

Run C++, Android, Swift tests

Types of changes

Checklist

• Create pull request as draft initially, unless its complete.
• Add tests to cover changes as needed.
• Update documentation as needed.
• If there is a related Issue, mention it in the description.

If you're adding a new blockchain

• I have read the guidelines for adding a new blockchain.