id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
1806239984,PR_kwDOAMm_X85Vl5Ch,7989,Allow opening datasets with nD dimenson coordinate variables.,2448579,closed,0,,,5,2023-07-15T17:33:18Z,2023-07-19T19:06:25Z,2023-07-19T18:25:33Z,MEMBER,,0,pydata/xarray/pulls/7989,"<!-- Feel free to remove check-list items aren't relevant to your change -->

- [x] Closes #2233
- [x] Tests added
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`


Avoid automatic creating of Index variable when nD variable shares name with one of its dimensions.

Closes #2233

```python
url = ""http://www.smast.umassd.edu:8080/thredds/dodsC/FVCOM/NECOFS/Forecasts/NECOFS_GOM3_FORECAST.nc""
ds = xr.open_dataset(url, engine=""netcdf4"")
display(ds)

xr.testing._assert_internal_invariants(ds, check_default_indexes=False)  ! no raise on #7368
```

~The internal invariants assert fails on `main` but succeeds on #7368~. EDIT: now fixed the invariants check.

<img width=""816"" alt=""image"" src=""https://github.com/pydata/xarray/assets/2448579/f7ff8c78-11e2-42d7-beed-61d53d99557b"">
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