PDF export - repeatHeaders exports thead element even if no row is rendered on a page

[kdikov82]

In the following example, the exported PDF file renders a header with no rows on the first page: https://stackblitz.com/edit/react-gyd3fu-v7ajzp?file=app/main.jsx

Expected behavior: Do not render header if no rows are rendered along with the header in the current page

[kdikov82]

Another scenario that replicates the issue is described in ticket: 1574403 If the content of a cell in the Grid is too long, that pushes the tbody to a separate page in the exported file and leaves the thead as a separate element in the first exported page.

[tomking2]

Currently our biggest issue when using Kendo's PDF generator, and severely limiting our ability to dynamically generate content for use, as output requires manual intervention to look right.