use __unsafe_increaseBalance to react to batch minting

contracts/mocks/token/ERC721ConsecutiveEnumerableMock.sol

@@ -34,4 +34,8 @@ contract ERC721ConsecutiveEnumerableMock is ERC721Consecutive, ERC721Enumerable
     ) internal virtual override(ERC721Consecutive, ERC721Enumerable) returns (address) {
         return super._update(to, tokenId, constraints);
     }
+
+    function __unsafe_increaseBalance(address account, uint256 amount) internal virtual override(ERC721, ERC721Enumerable) {
+        super.__unsafe_increaseBalance(account, amount);
+    }
 }

contracts/mocks/token/ERC721ConsecutiveMock.sol

@@ -46,6 +46,10 @@ contract ERC721ConsecutiveMock is ERC721Consecutive, ERC721Pausable, ERC721Votes
     ) internal virtual override(ERC721Consecutive, ERC721Pausable, ERC721Votes) returns (address) {
         return super._update(to, tokenId, constraints);
     }
+
+    function __unsafe_increaseBalance(address account, uint256 amount) internal virtual override(ERC721, ERC721Votes) {
+        super.__unsafe_increaseBalance(account, amount);
+    }
 }
 
 contract ERC721ConsecutiveNoConstructorMintMock is ERC721Consecutive {

contracts/token/ERC721/ERC721.sol

@@ -456,7 +456,7 @@ abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Er
      * that `ownerOf(tokenId)` is `a`.
      */
     // solhint-disable-next-line func-name-mixedcase
-    function __unsafe_increaseBalance(address account, uint256 amount) internal {
+    function __unsafe_increaseBalance(address account, uint256 amount) internal virtual {
         _balances[account] += amount;
     }
 }

contracts/token/ERC721/extensions/ERC721Enumerable.sol

@@ -164,4 +164,15 @@ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
         delete _allTokensIndex[tokenId];
         _allTokens.pop();
     }
+
+    /**
+     * See {ERC721-__unsafe_increaseBalance}. We need that to account tokens that were minted in batch
+     */
+    // solhint-disable-next-line func-name-mixedcase
+    function __unsafe_increaseBalance(address account, uint256 amount) internal virtual override {
+        if (amount > 0) {
+            revert ERC721EnumerableForbiddenBatchMint();
+        }
+        super.__unsafe_increaseBalance(account, amount);
+    }
 }

contracts/token/ERC721/extensions/ERC721Votes.sol

@@ -40,4 +40,13 @@ abstract contract ERC721Votes is ERC721, Votes {
     function _getVotingUnits(address account) internal view virtual override returns (uint256) {
         return balanceOf(account);
     }
+
+    /**
+     * See {ERC721-__unsafe_increaseBalance}. We need that to account tokens that were minted in batch
+     */
+    // solhint-disable-next-line func-name-mixedcase
+    function __unsafe_increaseBalance(address account, uint256 amount) internal virtual override {
+        super.__unsafe_increaseBalance(account, amount);
+        _transferVotingUnits(address(0), account, amount);
+    }
 }

test/token/ERC721/extensions/ERC721Consecutive.test.js

@@ -180,17 +180,6 @@ contract('ERC721Consecutive', function (accounts) {
           expect(await this.token.$_exists(tokenId)).to.be.equal(true);
           expect(await this.token.ownerOf(tokenId), user2);
         });
-
-        it('reverts burning batches of size != 1', async function () {
-          const tokenId = batches[0].amount + offset;
-          const receiver = batches[0].receiver;
-
-          await expectRevertCustomError(
-            this.token.$_afterTokenTransfer(receiver, ZERO_ADDRESS, tokenId, 2),
-            'ERC721ForbiddenBatchBurn',
-            [],
-          );
-        });
       });
     });
   }