LockTimeout is not available in drift-detection mode

[hirenko-v]

Seems like tfState.lockTimeout is not available in drift-detection mode (approvePlan: disable) so terraform is failing with lock error immediately.

In our case we have another tool that manages plan/apply and tofu-controller in drift-detection mode. From time to time we have conflicts so we'd like to have such a feature.

I've created the Pull Request to cover this