ShaderGraph: Can a CustomRenderTexture target have Emission for HDR Color?

I want to use ShaderGraph to generate a CustomRenderTexture using R16G16B16A16_SFLOAT that supports emissive HDR color.

When I select “Custom Render Texture” as the Active Target in ShaderGraph, the Emission option is unavailable.

When adding a HDR color, this error is encountered:
Shader error in 'Shader Graphs/Master': undeclared identifier 'LinearToSRGB' at /(206) (on d3d11)

Is there anyway to achieve HDR color on Custom Render Texture target?