Patch Work Fixes

[sk-enya]

• [x] proof withdrawal copy need to fix to

  
  For the proof of withdrawal, there is another way to count down. We can find the latest L2 block that we submitted on L1 and compare it with the block number of the withdrawal transaction. If it’s larger than the block number of the withdrawal function, users can submit their proof.
  await L2OutputOracle.latestBlockNumber()

- [x] verify logic of proof failure.
- [x] Light bridge crash.