Revert most of the wrapping in _G logic until further testing

Author: Numynum

src/XmlFileParser.php

@@ -193,8 +193,8 @@ private function childHasInterestingData(Frame $child): bool
 
     private function wrapInGIfNeeded(string $name): string
     {
-        if (!preg_match('/^[A-z][A-z0-9]*$/', $name)) {
-            return '_G["' . str_replace('"', '\\"', $name) . '"]';
+        if (str_contains($name, '$') || str_contains($name, '-')) {
+            return '_G["' . $name . '"]';
         }
 
         return $name;