Chore: always use config ref

[huozhi]

• use config ref in execute function
• shorten generated code (8016 -> 8582)

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[shuding]

This seems like a good idea! Unrelated: I think we should make clear about when to use the latest config and when use the snapshot.

[huozhi]

Like use ref for function calls and config for some primitive values?

[shuding]

I meant when to use configRef.current.a and when to use config.a. Most of the options should be good to use the latest value, but for some we need to use the snapshot for correctness.