fix(l2): based CI (lambdaclass#3404)

**Motivation**

In lambdaclass#3242, `verifyBatchesAligned()` was updated in the based
`OnChainProposer` to be consistent with the non-based one, but the
`onlySequencer` identifier was added by mistake.

**Description**

Removes the `onlySequencer` identifier.

Closes None

Author: avilagaston9

crates/l2/contracts/src/l1/based/OnChainProposer.sol

@@ -368,7 +368,7 @@ contract OnChainProposer is
         uint256 firstBatchNumber,
         bytes[] calldata alignedPublicInputsList,
         bytes32[][] calldata alignedMerkleProofsList
-    ) external override onlySequencer whenNotPaused {
+    ) external override {
         require(
             ALIGNEDPROOFAGGREGATOR != DEV_MODE,
             "OnChainProposer: ALIGNEDPROOFAGGREGATOR is not set"