[FW][FIX] borders: wrong borders on remove rows #4121
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Description
When removing multiple headers, the borders are not shifted correctly, leading to incorrect borders.
This happens because we modify the borders for each deleted rows separately. But we don't sort the rows before modifying the borders. So we first delete the row 1, then the row 2. But the row 2 is now the row 1, since the old row 1 has been deleted. So we end up with wrong operations.
This is solved by simply sorting the rows in reverse order before modifying the borders.
Task: : 3884112
review checklist
Forward-Port-Of: #4119
Forward-Port-Of: #4109