Unable to deselect item in spreadsheetView(_:didSelectItemAt:)

## Expected Behavior
Calling `spreadsheetView.deselectItem(at: indexPath, animated: true)` in the `spreadsheetView(_:didSelectItemAt:)` delegate method should deselect the item. `UITableView` has this behavior.

## Actual Behavior
Calling `spreadsheetView.deselectItem(at: indexPath, animated: true)` in the `spreadsheetView(_:didSelectItemAt:)` delegate method does not deselect the item because the `indexPath` is not added to `selectedIndexPaths` until after the delegate method is called.

## Steps to Reproduce the Problem

1. Tap to select a cell
2. See that the cell remains selected

## Specifications

- Xcode version: 13.4.1
- iOS version: 15.5
- Dependency manager + version: Cocoapods 1.11.3