BUG: Styler multiIndex and hiding with render trimming
### 

- [X] I have checked that this issue has not already been reported.

- [X] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.

- [X] I have confirmed this bug exists on the master branch of pandas.


### Reproducible Example

```python
see image
```


### Issue Description

![Screen Shot 2021-10-31 at 08 12 15](https://user-images.githubusercontent.com/24256554/139572519-a2336f20-c194-4586-8202-9f8af22ea802.png)

The body seems to render but the index headers do not appear.

### Expected Behavior

Index headers visible.

### Installed Versions

<details>

Replace this line with the output of pd.show_versions()

</details>
