[NodeAnalyzer] Remove parent lookup on ExprAnalyzer::isNonTypedFromParam()

[samsonasik]

Let's try rely on $scope->getNativeType($expr) is a MixedType with non explicit mixed detection instead of climbing lookup parent.

[samsonasik]

It seems cause changed behaviour on RecastingRemovalRector on CodeIgniter4 project on @param and is_numeric() check:

1) system/HTTP/RequestTrait.php:255

    ---------- begin diff ----------
@@ @@

         // Null filters cause null values to return.
         $filter ??= FILTER_DEFAULT;
-        $flags = is_array($flags) ? $flags : (is_numeric($flags) ? (int) $flags : 0);
+        $flags = is_array($flags) ? $flags : (is_numeric($flags) ? $flags : 0);

         // Return all values when $index is null
         if ($index === null) {
    ----------- end diff -----------

Applied rules:
 * RecastingRemovalRector

which numeric an be : "0", while (int) cast got 0. which seems make error when using strict types, see https://3v4l.org/fn513

[samsonasik]

#4390