[Fix] metered execution suspend before guest program completed

[noel2004]

While handling unexpected large chunks, using metered execution for obtaining cycles / cost would suspend the execution at early stage so the program can not finish.

This RP handle such issue by 2 improve:

1. Increase the preset max_cost so metered execution can handle bigger execution traces (~1500 segs for our chunk circuit)
2. If 1 still not work, we fall back to common execution, which has no hard limit on segments / cost to ensure the program can finish. In this case, we declined tracing the cycles (But at least we have known it is quite huge).

[noel2004]

Has applied on prover and tested against several sepolia chunks, all passed.

[roynalnaruto]

Could you please add more context to the vm module? And some nitpicks.