### Godot version

4.1 dev

### System information

Win 10

### Issue description

Have a node and bunch of child nodes.
Some get _ready called, and some do not.

### Steps to reproduce

create a scene and bunch of child nodes with different sripts.

### Minimal reproduction project

n/a
if (_is_any_processing()) {
		_add_to_process_thread_group();
	}
	data.process_thread_group_owner = p_owner;
	if (p_owner != nullptr) {
		data.process_group = p_owner->data.process_group;
	} else {
		data.process_group = &data.tree->default_process_group;
	}
	for (KeyValue<StringName, Node *> &K : data.children) {
		if (K.value->data.process_thread_group != PROCESS_THREAD_GROUP_INHERIT) {
			continue;
		}
		K.value->_add_to_process_thread_group();
	}
}
bool Node::is_processing_internal() const {