Fixed highlighting range for errors in class object

compiler/testData/diagnostics/tests/enum/enumEntryCannotHaveClassObject.kt

@@ -2,9 +2,9 @@ enum class E {
     FIRST
 
     SECOND {
-        <!CLASS_OBJECT_NOT_ALLOWED!>class object {
+        <!CLASS_OBJECT_NOT_ALLOWED!>class object<!> {
             fun foo() = 42
-        }<!>
+        }
     }
 }