Fix incorrect zval type_flags in preg_replace_callback_array() for immutable arrays

The ZVAL_ARR macro always set the zval type_info to IS_ARRAY_EX, even if the
hash table is immutable.

Fix incorrect zval type_flags in preg_replace_callback_array() for immutable arrays

The ZVAL_ARR macro always set the zval type_info to IS_ARRAY_EX, even if the
hash table is immutable. Since in preg_replace_callback_array() we can return
the passed array directly, and that passed array can be immutable, we need to
reset the type_flags to keep the VM from performing ref-counting on the array.

Fixes GH-10968
Closes GH-10970

show more ...