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
1718410975,I_kwDOAMm_X85mbN7f,7856,Unrecognized chunk manager dask - must be one of: [],14371165,closed,0,,,11,2023-05-21T08:07:57Z,2024-03-27T19:09:18Z,2023-05-24T16:26:20Z,MEMBER,,,,"### What happened?

I have just updated my development branch of xarray to latest main. No other changes.
When using `.chunk()` on a Variable xarray crashes.

### What did you expect to happen?

No crash

### Minimal Complete Verifiable Example

```Python
import numpy as np
import pandas as pd
import xarray as xr


t_size = 8000
t = np.arange(t_size)
var = xr.Variable(dims=(""T"",), data=np.random.randn(t_size)).chunk()
```


### MVCE confirmation

- [X] Minimal example — the example is as focused as reasonably possible to demonstrate the underlying issue in xarray.
- [X] Complete example — the example is self-contained, including all data and the text of any traceback.
- [X] Verifiable example — the example copy & pastes into an IPython prompt or [Binder notebook](https://mybinder.org/v2/gh/pydata/xarray/main?urlpath=lab/tree/doc/examples/blank_template.ipynb), returning the result.
- [X] New issue — a search of GitHub Issues suggests this is not a duplicate.

### Relevant log output

```Python
Traceback (most recent call last):

  File ""C:\Users\J.W\AppData\Local\Temp\ipykernel_6480\4053253683.py"", line 8, in <cell line: 8>
    var = xr.Variable(dims=(""T"",), data=np.random.randn(t_size)).chunk()

  File ""C:\Users\J.W\Documents\GitHub\xarray\xarray\core\variable.py"", line 1249, in chunk
    chunkmanager = guess_chunkmanager(chunked_array_type)

  File ""C:\Users\J.W\Documents\GitHub\xarray\xarray\core\parallelcompat.py"", line 87, in guess_chunkmanager
    raise ValueError(

ValueError: unrecognized chunk manager dask - must be one of: []
```


### Anything else we need to know?

Likely from #7019.

### Environment

<details>

xr.show_versions()
C:\Users\J.W\anaconda3\envs\xarray-tests\lib\site-packages\_distutils_hack\__init__.py:33: UserWarning: Setuptools is replacing distutils.
  warnings.warn(""Setuptools is replacing distutils."")

INSTALLED VERSIONS
------------------
commit: None
python: 3.10.6 | packaged by conda-forge | (main, Aug 22 2022, 20:30:19) [MSC v.1929 64 bit (AMD64)]
python-bits: 64
OS: Windows
OS-release: 10
machine: AMD64
processor: Intel64 Family 6 Model 58 Stepping 9, GenuineIntel
byteorder: little
LC_ALL: None
LANG: en
LOCALE: ('Swedish_Sweden', '1252')
libhdf5: 1.12.2
libnetcdf: 4.8.1

xarray: 2022.9.1.dev266+gbd01f9cc.d20221006
pandas: 1.5.2
numpy: 1.23.5
scipy: 1.9.3
netCDF4: 1.6.0
pydap: installed
h5netcdf: 1.0.2
h5py: 3.7.0
Nio: None
zarr: 2.13.2
cftime: 1.6.2
nc_time_axis: 1.4.1
PseudoNetCDF: 3.2.2
iris: 3.3.0
bottleneck: 1.3.5
dask: 2022.9.2
distributed: 2022.9.2
matplotlib: 3.6.2
cartopy: 0.21.0
seaborn: 0.13.0.dev0
numbagg: 0.2.1
fsspec: 2022.10.0
cupy: None
pint: 0.19.2
sparse: 0.13.0
flox: 999
numpy_groupies: 0.9.14+22.g19c7601
setuptools: 65.5.1
pip: 22.3.1
conda: None
pytest: 7.2.0
mypy: 1.2.0
IPython: 7.33.0
sphinx: 5.3.0

</details>
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