Resets to original graph environment only if the current environment is not the same as the original one

Author: timayabi2020

src/Authentication/Authentication/Cmdlets/InvokeMgGraphRequest.cs

@@ -999,8 +999,11 @@ private string QualifyFilePath(string path)
         /// </summary>
         private void ResetGraphSessionEnvironment()
         {
-            _originalEnvironment = GraphSession.Instance.Environment;
-            GraphSession.Instance.Environment = _originalEnvironment;
+            var currentEnvironment = GraphSession.Instance.Environment;
+            if(currentEnvironment != null && !currentEnvironment.Equals(_originalEnvironment))
+            {
+                GraphSession.Instance.Environment = _originalEnvironment;
+            }
         }
 
         #region CmdLet LifeCycle
@@ -1039,6 +1042,8 @@ private async Task ProcessRecordAsync()
                             if (ShouldCheckHttpStatus && !isSuccess)
                             {
                                 var httpErrorRecord = await GenerateHttpErrorRecordAsync(httpResponseMessageFormatter, httpRequestMessage);
+                                // A reset of the GraphSession Environment is required to avoid side effects
+                                ResetGraphSessionEnvironment();
                                 ThrowTerminatingError(httpErrorRecord);
                             }
                             await ProcessResponseAsync(httpResponseMessage);