fix test: plasma_test.go

[lesterli]

Summary

This PR uncomments the plasma_test.go and fix the failed test. #1

From the test case, we can see:

• L2 block is started from refA1, its block number is 1
• at the L1 block(i==10), the finality signal trigger the tryFinalize()

  if i == 10 { // finalize a L1 commitment
    fi.OnEvent(FinalizeL1Event{FinalizedL1: l1parent})

• one L1 block derives two L2 blocks

  for j := uint64(0); j < 2; j++ {
     l2parent = eth.L2BlockRef{
   	Hash:           testutils.RandomHash(rng),
   	Number:         l2parent.Number + 1,
   	ParentHash:     l2parent.Hash,
   	Time:           l2parent.Time + cfg.BlockTime,
   	L1Origin:       previous.ID(), // reference previous origin, not the block the batch was included in
   	SequenceNumber: j,
     }
     fi.OnEvent(engine.SafeDerivedEvent{Safe: l2parent, DerivedFrom: l1parent})
  }

• so the finalized L2 block number should be 21(1 + 10*2), we should mock L2 block 1-21

  if i < 10 {
    mockL2Refs = append(mockL2Refs, l2parent)
    l2F.ExpectL2BlockRefByNumber(l2parent.Number, l2parent, nil)
  }
  
  if i < 10 {
    mockQueryBlockRangeBabylonFinalized(sdkClient, mockL2Refs)
  }

Test Plan

make lint-go
cd op-node && make test

[bap2pecs]

i just merged develop to the rfc branch. you will need to fix conflicts

[bap2pecs]

nice fix!