Accuracy issues for vdot op

[PawelSwider2000]

Cases:
op_ut,third_party.torch-xpu-ops.test.xpu.test_decomp_xpu.TestDecompXPU,test_comprehensive_vdot_xpu_complex128
op_ut,third_party.torch-xpu-ops.test.xpu.test_decomp_xpu.TestDecompXPU,test_comprehensive_vdot_xpu_complex64
op_ut,third_party.torch-xpu-ops.test.xpu.test_decomp_xpu.TestDecompXPU,test_quick_vdot_xpu_complex128
op_ut,third_party.torch-xpu-ops.test.xpu.test_decomp_xpu.TestDecompXPU,test_quick_vdot_xpu_complex64

Fails for vdot for complex datatypes, likely connected to conjugate tensors.