Bad typing on MUIDataTableOptions renderExpandableRow - rowData

Bad typing on MUIDataTableOptions renderExpandableRow - rowData param
rowData is NOT a string array, it is an object similar to React.Component<{text: string}>

## Expected Behavior

rowData is NOT a string array, it is an object like React.Component<{text: string}>

## Current Behavior

rowData is set to a string array

## Steps to Reproduce (for bugs)

1. Check MUIDataTableOptions type
2. Check renderExpandableRow
3. Check rowData param

## Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | |
| MUI-datatables | |
| React | |
| browser | |
| etc | |

Start at the MUIDataTableOptions type and inspect the renderExpandableRow rowData parameter. Compare its current string-array typing with the object-shaped rowData described in the issue. Done means the declaration reflects the actual rowData shape and the project’s type checks pass.

Written by the indexing model from the issue text.