Is your feature request related to a problem? Please describe.
I don't always want an empty state on a List and it's impossible to opt out

Describe the solution you'd like
Passing false to the empty prop disable the empty state completely

Describe alternatives you've considered
Passing my Datagrid component as the empty state. It works but the List toolbar is not dis

hi, after hide columns still show up in columnsButton.

i hide some columns in my table using hidden:true also the show up disabled but still there, have some way to hide columns from there?

and also i have space between index and name columns after hide column

• The issue is present in the latest release.
• I have searched the [issues](https://github.com/mui

In the serverside-pagination example, we have some sample means of adding loading indicators. Loading indicators are a common and important part of the serverside experience, so we should have some better examples here so that other devs can work from good ideas, and we can keep full-fledged loading indicator options out of the core library (E.g. gregnb/mui-datatables#958

Setup Github actions that triggers on PR and runs all unit tests.

IconButton does not 'blur' when it loses focus, retaining it's --background-focused class after the mouse or touch leaves the item.