Description:

Screen reader dependent user will be impacted if blank column headers are defined on the table. They get no information about that column.

Test environment:

Microsoft Edge Version 105.0.1343.33 (Official build) (64-bit)
OS version (OS Build 22000.856)
URL: https://demos.telerik.com/kendo-ui/grid/aggregates?_ga=2.128136910.351146969.1663006247-1325185890.1643853544

Repro Steps:

1. Open the given URL in Edge .
2. Enable Narrator using 'Ctrl+ Win + Enter' key.
3. Navigate to the table present Aggregate page. And navigate to the column headers.
4. Observe whether Blank column header is defined on the table or not.

Actual Result:

Blank column header should not be defined on the table present on Aggregates page. 
The narrator only reads its position.

Expected Result:

Appropriate name should be defined for the blank column header is defined on the table present on Aggregates page.
The narrator should also announce the same.

Additional Notes:

Same issue is observed on similar tables defined on the page.