Unable to show/hide columns with CustomRowRender

## Expected Behavior

I would like to be able to use customRowRender in tandem with show/hide columns functionality

## Current Behavior

Currently no information on which columns to display is passed through to the customRowRender function, and it takes quite a bit of effort to set something up that replicates doing so.

## Steps to Reproduce (for bugs)

1. Run the Custom Row Render example included with mui-datatables
2. Hide one of the columns
3. The column is still displayed in the row.

## Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | 4.9.7 |
| MUI-datatables | 2.14.0 |
| React | 16.9.26 |
| browser | Chrome 81 |

Start with the Custom Row Render example included with mui-datatables and trace how customRowRender receives row data alongside the show/hide columns state. Reproduce the issue by hiding a column, then verify that hidden columns are no longer displayed in the custom-rendered row.

Written by the indexing model from the issue text.