Unexposed Texture2D default value is not passed to VFX

Steps to reproduce:

1. Import the attached project
2. Open Scene, VFX and Shadergraph in Texture Unexposed Property folder
3. Observe that Texture is unexposed and has default value assigned in ShaderGraph

Actual results: Quad and strip are white

Expected results: Quad and strip has Default-Particle texture assigned

Reproducible with versions: 6000.3.0a2

Not reproducible with versions: not tested

Can’t test with versions: 

Tested on (OS): macos, windows

Notes:

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