sanity for TimelockController and Votes

certora/munged/mocks/ERC20PermitMock.sol

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+import "../token/ERC20/extensions/draft-ERC20Permit.sol";
+
+contract ERC20PermitMock is ERC20Permit {
+    constructor(
+        string memory name,
+        string memory symbol,
+        address initialAccount,
+        uint256 initialBalance
+    ) payable ERC20(name, symbol) ERC20Permit(name) {
+        _mint(initialAccount, initialBalance);
+    }
+
+    function getChainId() external view returns (uint256) {
+        return block.chainid;
+    }
+}