Handle filter expression on current object

Author: lucasnetau

src/Filters/QueryMatchFilter.php

@@ -105,7 +105,7 @@ public function filter($collection): array
                 $comparisonResult = null;
                 if ($notNothing) {
                     $comparisonResult = match ($operator) {
-                        null => AccessHelper::keyExists($value, $key, $this->magicIsAllowed),
+                        null => AccessHelper::keyExists($value, $key, $this->magicIsAllowed) || (!$key),
                         "=", "==" => $this->compareEquals($value1, $comparisonValue),
                         "!=", "!==", "<>" => !$this->compareEquals($value1, $comparisonValue),
                         '=~' => @\preg_match($comparisonValue, $value1),

tests/data/baselineFailedQueries.txt

@@ -1,6 +1,5 @@
 bracket_notation_with_quoted_closing_bracket_literal
 dot_notation_with_key_root_literal
-filter_expression_with_current_object
 filter_expression_with_different_grouped_operators
 filter_expression_with_tautological_comparison
 union_with_wildcard_and_number