feat: add TransientLockUnsafeMock contract and enhance TransientLock tests for improved locking functionality

Author: ifelsedeveloper

contracts/tests/mocks/TransientLockUnsafeMock.sol

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.30;
+
+import "../../libraries/TransientLockUnsafe.sol";
+
+contract TransientLockUnsafeMock {
+    using TransientLockUnsafeLib for TransientLock;
+
+    TransientLock private _lock;
+
+    function lock() external {
+        _lock.lock();
+    }
+
+    function unlock() external {
+        _lock.unlock();
+    }
+
+    function isLocked() external view returns (bool) {
+        return _lock.isLocked();
+    }
+
+    function lockAndCheck() external returns (bool) {
+        _lock.lock();
+        return _lock.isLocked();
+    }
+
+    function lockUnlockAndCheck() external returns (bool) {
+        _lock.lock();
+        _lock.unlock();
+        return _lock.isLocked();
+    }
+
+    function doubleLock() external {
+        _lock.lock();
+        _lock.lock();
+    }
+
+    function unlockWithoutLock() external {
+        _lock.unlock();
+    }
+}