IgrDataGrid places last active cell value in blank columns when navigating from previously blanked numeric columns

[agoldenbaum]

Steps to reproduce:

1. Run the sample in the following topic: https://www.infragistics.com/products/ignite-ui-react/react/components/grids/data-grid/cell-activation#react-grid-cell-activation-example.
2. In any row in the grid, enter edit mode and blank out the values of the Salary and City column.
3. Click on any other active cell that has a value in it.
4. Double click in the previously blanked Salary column cell. It's value should currently be $0.
5. Press Shift+Tab to navigate to the blank City cell to its left.

Result:
The value in the City cell that is navigated to in Step 5 gets the value from the cell activated in Step 3 placed in it.