Question about some changes in 11.3

[Mat Arye]

Hi,

11.3 included some change to partition table planning. Namely
commit 925f46f ("Fix handling of targetlist SRFs when scan/join relation is
known empty.") seems to redo all paths for partitioned tables
in apply_scanjoin_target_to_paths. It clears the paths in:

```
 if (rel_is_partitioned)
        rel->pathlist = NIL
```

Then the code rebuild the paths. However, the rebuilt append path never
gets the
set_rel_pathlist_hook called. Thus, the work that hook did previously gets
thrown away and the rebuilt append path can never be influenced by this
hook. Is this intended behavior? Am I missing something?

Thanks,
Mat
TimescaleDB