Revert "Remove Environment dotnet in favor of new app addin SystemEnvironment (#2893)"

This reverts commit 7cb2fe9.

Author: mazhelez

src/System Application/App/DotNet Aliases/src/dotnet.al

@@ -849,16 +849,6 @@ dotnet
         }
     }
 
-    assembly("Microsoft.Dynamics.Nav.SystemEnvironment")
-    {
-        Culture = 'neutral';
-        PublicKeyToken = '31bf3856ad364e35';
-
-        type("Microsoft.Dynamics.Nav.SystemEnvironment.SystemEnvironment"; "SystemEnvironment")
-        {
-        }
-    }
-
     assembly("Microsoft.Dynamics.Nav.Timer")
     {
         Culture = 'neutral';
@@ -1446,6 +1436,10 @@ dotnet
         {
         }
 
+        type("System.Environment"; "Environment")
+        {
+        }
+
         type("System.EventArgs"; "EventArgs")
         {
         }