DxilConfTest::UnaryHalfOpTest#HtanHalf is failing on recent 24H2 build

Description
DxilConfTest::UnaryHalfOpTest#HtanHalf is failing on recent 24H2 build

Steps to Reproduce
it used to pass with 22621 and we notice 24H2 slightly changed the expected values of tanh(1.0), tanh(-1.0) from '0x3a17, 0xba17' to current '0x3a18, 0xba18'.
It looks we also need to enlarge the tolerance for the test, like https://github.com/microsoft/DirectXShaderCompiler/issues/6179

Actual Behavior
element #7, input = 1.00000000(0x3c00), output = 0.76074219(0x3a16), expected = 0.76171875(0x3a18)
Error: Verify: IsTrue(CompareOutputWithExpectedValueHalf(output, ref, type, tolerance)) [File: OSS\dxil\test\hlk\dxilconf.cpp, Function: VerifyOutputWithExpectedValueHalf, Line: 7098]
element #8, input = -1.00000000(0xbc00), output = -0.76074219(0xba16), expected = -0.76171875(0xba18)
Error: Verify: IsTrue(CompareOutputWithExpectedValueHalf(output, ref, type, tolerance)) [File: OSS\dxil\test\hlk\dxilconf.cpp, Function: VerifyOutputWithExpectedValueHalf, Line: 7098]

Environment

• DXC version dxc_2024_05_24
• Host Operating System win11 24h2

Start in OSS\dxil\test\hlk\dxilconf.cpp, focusing on DxilConfTest::UnaryHalfOpTest#HtanHalf and VerifyOutputWithExpectedValueHalf at line 7098. Compare the expected half values and tolerance with the behavior reported on Windows 11 24H2; done means the test accepts the current tanh(1.0) and tanh(-1.0) results while retaining coverage.