Fix GH-20657: Mark object non-lazy before deleting info in zend_lazy_object_realize() #21094
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A lazy object is marked non-lazy when all its properties are initialized. Before doing so we delete the object info, resulting in a temporarily invalid state. In GH-20657 the GC is triggered at this moment.
Fix by deleting the object info after marking it non lazy.
Fixes GH-20657.
Would have been avoided by GH-20001.