`expm1` returns wrong result for `-0 + 0 j` on CPU

[antonwolfy]

The following example breaks Python array API:

import dpctl, dpctl.tensor as dpt

dpctl.__version__
# Out: '0.22.0dev0+114.g0797836be2'

a = dpt.asarray(complex(-0.0, 0.0), device='cpu')
dpt.expm1(a)
# Out: usm_ndarray(-0.+0.j)

# on GPU the result is expected:
a = dpt.asarray(complex(-0.0, 0.0), device='gpu')
dpt.expm1(a)
# Out: usm_ndarray(0.+0.j)

According to the spec:

If a is either +0 or -0 and b is +0, the result is 0 + 0j

[ndgrigorian]

This issue will soon no longer be relevant to dpctl with migration of tensor to dpnp.

Please cross-link this issue to dpnp.