chore: address follow-up comments of CLI typed call output

[juan518munoz]

Closes #2512

1. Drop CallCode.result_felts: removed the field
2. An undecodable result no longer aborts the call: print_call_result is now infallible, it prints the decode error.
3. Fix the untyped-fallback: corrected the comment, it claimed landing there meant the export carried no signature, when in reality a Fast or C lowering covers the case too.
4. Accept bech32 account IDs as arguments: added codecs::parse_account_id_token to parse both hex or bech32 addresses.
5. Fold overlapping call.rs unit tests: collapsed some test into one.