[Fixes #58974626] Remove blank rows from file during upload
Revert "fixes the annoying bug whereby focus would be set on the "delete" checkboxes on load"

This reverts commit f757f2d768f726565675fc26a9015e25642df03c.
fixes problem when sometimes the sandbox shipments table would come up blank
fexes the problem with setting focus on checkboxes and therefore scrolling to bottom of page on load
visibleShipments should never be null