Fix class map ptr for parent type if interning disabled

As zend_update_parent_ce() only runs later, the parent reference
may still point to the original class entry rather than the
p

Fix class map ptr for parent type if interning disabled

As zend_update_parent_ce() only runs later, the parent reference
may still point to the original class entry rather than the
persisted one. Memory held by the original class entry may have
already been deallocated. Avoid use-after-free by explicitly
fetching the persisted parent CE.

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