Partially revert hypot arguments zero checks

Unfortunately, libc++'s 3-argument std::hypot implementation is
numerically unstable until LLVM 19.x. Therefore, checking the arguments
for zeros is insufficient since an underflow can still occur resulting
in a zero norm which requires another check. As such, division by zero
cannot be reliably avoided.

Change-Id: I189c8dc722aaec1ebc3ec8b1a177e1d8ac3b36db