Add DXIL module flag bit offset for SHADER_FEATURE_FLAG. Added DXIL_MODULE_FLAG for DXIL module flag which does not have feature flag. Use DXILModuleFlags for ComputedShaderFlags instead of ShaderFeatureFlags. ComputedShaderFlags::getFeatureFlags() was added to get FeatureFlags. Rename DXContainerGlobals::getShaderFlags to DXContainerGlobals::getFeatureFlags. Fixes #57925