[alpha.3] Dynamical DataGrid column changing not followed with List rerendering

[tusmenko]

What you were expecting:
I expect to be able to dynamically configure columns set in DataGrid

What happened instead:
Only header row changes its configuration, on column config change without page reload.

Steps to reproduce:

• Go to codesandbox
• Open Posts view
• Click first Toggle Columns button
• Consider only header row config changed

Related code:
https://codesandbox.io/s/simple-ju5rm

Consider Toggle Columns button behavior - when columns configuration depends on state, when config in state changes - only header row updates configuration.
If config stored in the cache - columns are rendered correctly on page reloading.

Other information:
This reproduced only on 3.0 alpha version.
Quite similar behavior observed with ra-customizable-datagrid module, even if this module rerenders all selected DataGrid children under the hood, instead of conditional rendering one-by-one. Previously it worked fine.
If there are some backward incompatible changes in DataGrid, I'll be glad for some guidance about them, to find a way to fix external package.

Environment

• React-admin version: "^3.0.0-alpha.3",
• Last version that did not exhibit the issue (if applicable): 2.9.x
• React version: ~16.8.0
• Browser: Chrome

[djhi]

Thanks a lot for reporting and the reproduction sandbox :)

[fzaninotto]

Fixed by #3635