Data validation should not require DATEVALUE("") when `Date` is selected

[kendo-bot]

Bug report

Data validation should not require DATEVALUE("") in Start and End inputs when Date is selected

Reproduction of the problem

https://demos.telerik.com/kendo-ui/spreadsheet/index

1. Select an empty cell
2. Click Data validation
3. Set Start: DATEVALUE("1/1/2024") and End: DATEVALUE("2/2/2025")
4. Automatic Hint message looks like: between DATEVALUE("1/1/2024") and End: DATEVALUE("2/2/2025")

Expected

Generated hint message shall not contain DATEVALUE("")

Ticket ID: 1677354

Environment

**Kendo UI version: [all]
**Browser: [all]