[SYCL] Fix corner case in imf function 'fdiv_rn' (#20427)
Triton XPU backend developer reports imf function fdiv_rn returns
incorrect result for corner case fdiv_rn(1.0f, 0.0f). The expected
should be inf instead of nan. This PR fixes this issue.
Signed-off-by: jinge90 <ge.jin@intel.com>
