Make the ParentAccessTrait::hasAccessToParent() method private (see #…

…7005)

Description
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SInce the method is ever only used by the voter including the trait, it should never have been protected.

Commits
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7148be5 Make the trait method private instead of protected

core-bundle/src/Security/Voter/DataContainer/ParentAccessTrait.php

@@ -25,7 +25,7 @@ public function __construct(private readonly AccessDecisionManagerInterface $acc
     {
     }
 
-    protected function hasAccessToParent(TokenInterface $token, string $attribute, CreateAction|DeleteAction|ReadAction|UpdateAction $action): bool
+    private function hasAccessToParent(TokenInterface $token, string $attribute, CreateAction|DeleteAction|ReadAction|UpdateAction $action): bool
     {
         $pids = [];