USE_ZEND_ALLOC=1 in tests with zend_test.observe_opline_in_zendmm=1

Fix invalid opline in OOM handlers within ZEND_FUNC_GET_ARGS and ZEND_BIND_STATIC (#12768)

* fix segfault in `ZEND_BIND_STATIC`

In case a `ZEND_BIND_STATIC` is being executed, while

Fix invalid opline in OOM handlers within ZEND_FUNC_GET_ARGS and ZEND_BIND_STATIC (#12768)

* fix segfault in `ZEND_BIND_STATIC`

In case a `ZEND_BIND_STATIC` is being executed, while the current chunk is full,
the `zend_array_dup()` call will trigger a OOM in ZendMM which will crash, as
the opline might be a dangling pointer.

* add missing test

* `assert()`ing seems easier than trying to make the compiler to not optimize

* moved from function call to INI setting, so we can use this in other places as well

* make `assert()` work no NDEBUG builds

* document magic number

* fix segfault in `ZEND_FUNC_GET_ARGS`

In case a `ZEND_FUNC_GET_ARGS` is being executed, while the current chunk is
full, the `zend_new_array()` call will trigger a OOM in ZendMM which will crash,
as the opline might be a dangling pointer.

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Co-authored-by: Florian Engelhardt <florian@engelhardt.tc>

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