[Grid] .k-table-td class should not have display: table-cell style

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Describe the bug

display: table-cell on a td is redundant and does nothing. It however is a hindrance when applying my own class, since I can't just use a "flex" class for instance - I would have to make one with a higher specificity simply to override your styling.

To Reproduce

This is the default styling.

To show that the display: table-cell is not useful, go to the grid demo on https://www.telerik.com/kendo-angular-ui/components/grid/, go into dev tools and remove display: table-cell on the .k-table-td class. The appearance of the grid will be unchanged.

Expected behavior

.k-table-td should not a value set for display.