NamingConventions/ValidFunctionName: move test with intentional parse error to a separate file

Author: rodrigoprimo

WordPress/Tests/NamingConventions/ValidFunctionNameUnitTest.1.inc

@@ -222,7 +222,3 @@ enum Suit {
 function lähtöaika() {} // OK.
 function lÄhtÖaika() {} // Bad, but only handled by the sniff if Mbstring is available.
 function lÄhtOaika() {} // Bad, handled via transliteration of non-ASCII chars if Mbstring is not available.
-
-// Live coding/parse error.
-// This has to be the last test in the file.
-function

WordPress/Tests/NamingConventions/ValidFunctionNameUnitTest.2.inc

@@ -0,0 +1,8 @@
+<?php
+
+/*
+ * Intentional parse error (nothing after T_FUNCTION).
+ * This should be the only test in this file.
+ */
+
+function