[Bug]: Some config.toml keys are not loaded when others are invalid

[kripper]

Is there an existing issue for the same bug?

• I have checked the existing issues.

Describe the bug and reproduction steps

In this case, file_store_path is being ignored (OH will use default value), because [sandbox] has an invalid key "persist_sandbox".

[core]
file_store_path = "/home/codespace/openhands_file_store"

[sandbox]
persist_sandbox = 1

Expected result

Only invalid keys should be ignored.

OpenHands Installation

Development workflow

OpenHands Version

main branch from 2025-01-08

Operating System

WSL on Windows

Logs, Errors, Screenshots, and Additional Context

15:43:14 - openhands:WARNING: utils.py:205 - Cannot parse [sandbox] config from toml, values have not been applied.
Error: SandboxConfig.init() got an unexpected keyword argument 'persist_sandbox'