filterOptions display not working

## Expected Behavior

When using filterOptions.display to alter my filter dropdown list, I expect my filter options to be changed accordingly.

## Current Behavior

Currently, despite using filterOptions.display, the filter list is not updated and stays the same.

My code currently is the following:

```
{
label: 'Customer',
name: 'customer',
options: {
// @ts-ignore
customFilterListRender(customer: any) {
return customer.organisation;
},
filterOptions: {
display: () => test,
},
customBodyRender(customer: any) {
if (!!customer) {
return {customer.organisation};
} else {
return null;
}
},
},
},
```

The items in this column are objects in the shape of `{id: string; organisation: string}`

## Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | 4.4.0 |
| MUI-datatables | 2.11.1 |
| React | 16.9.0 |