[php-src] PR #23843: Fix GH-23842: skipLazyInitialization() copies unresolved constant defaults

Pull Request: https://github.com/php/php-src/pull/23843 Author: lazerg Fixes GH-23842. skipLazyInitialization() reads the property default straight out of ce->default_properties_table. Under shared-memory opcache the class entry is immutable and a default that references a class constant stays an unresolved AST there; the resolved value lives in the class's mutable data. So the method copied an IS_CONSTANT_AST zval into the object slot, and the property then held something that is not a valid value of its declared type: var_dump() prints UNKNOWN:0, a typed return over it throws, and with the optimizer off it crashes. CE_DEFAULT_PROPERTIES_TABLE() picks the mutable table when there is one, which is what the rest of the lazy object code already does in zend_lazy_object_mark_as_initialized() and zend_lazy_object_init(). This was the last place reading the raw field on that path.