Fix plotting test

[barisoztas]

Due to a known bug with the xarray 2025.10.1 version, Dataset/DataArray coordinates names that are different from the dimension names are not included in the columns when converting a Dataset/DataArray with to_dataframe().

In this case, since summary_geometry was not same as the dimension name (i.e. geometry), summary_geometry column was not included the the df resulting a KeyError while trying to set geometry at;

xvec/xvec/accessor.py

Lines 959 to 961 in a88c521

	return df.set_geometry(
	geometry, crs=self._obj[geometry].attrs.get("crs", None)
	) # type: ignore

[martinfleis]

Can you include a comment here explaining what is happening with a link to the xarray issue? I'd like to see this as a temporary measure until it gets fixed in upstream.

[martinfleis]

Thanks!