Search bar closes when select collumns or filter icons in the toolbar are selected even when searchAlwaysOpen is set to true

## Expected Behavior
When the searchAlwaysOpen prop is on true, pressing the icons should not close it. Users will have no way to bring back the search.

## Current Behavior
Even when the searchAlwaysOpen prop is set on true pressing the filter icon or the select columns icon hides the searchbar

## Steps to Reproduce (for bugs)
1. Create a datatable with the searchAlways open prop set to true
2. click one of the mentioned icons. Notice that the search bar disapears with no way to bring it back

## Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | 4.12.3 |
| MUI-datatables | 3.7.8 |