xla

f790bc8a - Add python test for sizeAdd node and implement `int_` for XLASymNodeImpl. (#4218)

Add python test for sizeAdd node and implement `int_` for XLASymNodeImpl. (#4218) * add a test for sizeAdd * remove print * add print message to the test. * use int(t4) * remove prints * implement int_ * remove print * test SizeAdd::getStaticValue * resolve linter * fix comment * fix pr comment