Issue #4888 Modify contracts for transient storage.

Provided instructions to navigate to the contracts directory within the project directory, where the ReentrancyGuard contracts can be modified by deprecating the existing contract and creating a new one with transient storage implementation.

contracts/ReentrancyGuard.sol

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract ReentrancyGuard {
+    // Deprecated: This contract lacks transient storage support. Consider migrating to ReentrancyGuardTransient.
+    bool private _notEntered;
+
+    constructor () {
+        _notEntered = true;
+    }
+
+    modifier nonReentrant() {
+        require(_notEntered, "ReentrancyGuard: reentrant call");
+        _notEntered = false;
+        _;
+        _notEntered = true;
+    }
+}

contracts/ReentrancyGuardTransient.sol

@@ -0,0 +1,16 @@
+pragma solidity ^0.8.0;
+
+contract ReentrancyGuardTransient {
+    bool private _notEntered;
+
+    constructor () {
+        _notEntered = true;
+    }
+
+    modifier nonReentrant() {
+        require(_notEntered, "ReentrancyGuard: reentrant call");
+        _notEntered = false;
+        _;
+        _notEntered = true;
+    }
+}