MAINT: heasarc deprecation warning and changed API behaviour

Hi, in the tests running here: https://github.com/NuSTAR/nustar-clock-utils/actions/runs/13671731675/job/38223241105?pr=121

I'm getting this deprecation warning:
```
WARNING astroquery:logger.py:235 AstropyDeprecationWarning: The query_object function is deprecated and may be removed in a future version.
Use query_region instead.
```
and I was looking for alternatives. However, I can't find a place in the code where the query_object function is deprecated (I see a deprecation of single keywords, not the entire function), and from the PRs I see that there actually is ongoing development on this function (e.g. #3217 ). What am I missing? Thanks

Start with the linked Actions job and the query_object/query_region entry points, then compare the behavior discussed in PR #3217. Trace the warning to its caller and establish whether this repository or astroquery owns the deprecation; done means the affected test path and required compatibility change are identified.

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