Add integration test for L2 devchain

[arthurgousset]

Expected Behavior

Running integration tests should pass whether the devchain is L1 or L2:

forge test -vvv \
--match-path "test-sol/integration/*" \
--fork-url $ANVIL_RPC_URL

When that's the case, we should consider:

1. adding L2 integration tests, and
2. running both L1 and L2 integration tests on CI
   

   celo-monorepo/.github/workflows/protocol-devchain-anvil.yml

   Lines 131 to 144 in a906048

   	- name: Run integration tests against L1 devchain
   	if: success() || failure()
   	run: |
   	sudo apt-get update
   	sudo apt-get install -y lsof
   	source ./scripts/foundry/constants.sh
   	echo "Starting L1 from scratch to circumvent Anvil bug"
   	source ./scripts/foundry/create_and_migrate_anvil_devchain.sh
   	forge test -vvv \
   	--match-path "test-sol/integration/*" \
   	--fork-url $ANVIL_RPC_URL

Current Behavior

As of #11107, an existing integration test is failing when run against an L2 devchain.

Might be good to create an issue to track adding integration test here.

I briefly looked at the error that happens when running the integration test on L2, and its because RevokeCeloAfterL2TransitionTest assumes that the chain starts on L1 than transitions to L2 within the test.

This causes the validator contract to fail during initialization since devchain L2 is already active.

Originally posted by @soloseng in #11107 (comment)