fix: clarify contract call decode failures

[ShaoyeLi]

Summary

• raise a clearer contract execution error when a contract address has code but returns insufficient data for ABI decoding
• keep undeployed contract calls raising the existing missing-contract decode error
• add a release note fragment for issue Clearer error on contract execution error during call() #1002 and update sync/async regression tests

Verification

• .venv/bin/pytest tests/core/contracts/test_contract_call_interface.py -k "call_missing_function or call_undeployed_contract" -q