addressed potential misconfigurations

[suhasasumukh]

• Split the compile_transaction method into smaller, more focused methods to improve maintainability
• Addressed potential misconfigurations - ensuring that all signers are instances of Keypair
• Ensured proper exception handling for better error reporting

[GitBolt]

Hm doesn't seem anything worthy of changing here. Its removing typehinting from a lot of places which makes the code worse and the main thing, which it introduced, that is splitting a single function into multiple is not ideal for an SDK either. Since typehinting would show them as seperate class methods that a user would never end up using since its a part of one function only. Also introduces confusion for user as to why these seperate function exists. Closing the PR. You can have a look into open issues, those things would be 100% merged if fixed