PSR12/UseDeclaration: improve enum tests

Test more aspects of the sniff are applied correctly to enums.

Author: jrfnl

src/Standards/PSR12/Tests/Traits/UseDeclarationUnitTest.inc

@@ -215,6 +215,7 @@ enum SomeEnum1
 
 enum SomeEnum2
 {
-    use FirstTrait;
+
+    use   FirstTrait;
 
 }

src/Standards/PSR12/Tests/Traits/UseDeclarationUnitTest.php

@@ -47,7 +47,7 @@ public function getErrorList()
             165 => 1,
             170 => 1,
             208 => 1,
-            218 => 1,
+            219 => 3,
         ];
 
     }//end getErrorList()