ReflectionProperty::get{Hook,Hooks}(): handle dynamic properties

For dynamic properties, instead of crashing with a segmentation fault, just say
that there are no hooks. Also includes a

ReflectionProperty::get{Hook,Hooks}(): handle dynamic properties

For dynamic properties, instead of crashing with a segmentation fault, just say
that there are no hooks. Also includes a test to prevent regression.

Fixes GH-15718
Closes GH-15721

show more ...