STBB1-APUR power grounding

Hi guys, I'm designing PSU for battery-powered board.

Source is a single Li-Po cell, output voltage is 3,3V @500mA (peak, average would be less than 400mA).

I used STBB1-APUR to get 3,3V from battery (2,7 to 4,2V) but unfortunately my board came without pad for power ground due to gerber mistake.

I haven't found on STBB1-APUR datasheet power/heating considerations, so I'm wondering if I can test board performances (at ambient temperature) or won't STBB1-APUR work at all due this?

Thanks.