HDRP scenes by default now start with more physically accurate values, and use post processing to tone down the exposure.
The VFX particles do not work well with these initial settings (img attached, more info below).

Repro steps:
1. Import the attached package
2. Open the Exposure scene
3. Observe how the VFX assets render with the same settings compared to their HDRP and ShaderGraph Lit, Unlit, and Emissive counterparts

Expected outcome:
- Similar look between all

Notes:
- Proper emission will not be possible with the current exposure values (the sun is 100,000 lux, post processing is using exposure of 14, to the particles will need an intensity of around 10 million to look similar)
- Unlit particles are getting completely crushed by the exposure, outputting black. They should probably be set to ignore it, akin to the HDRP shaders
- Lit particles look significantly darker
- Default static mesh shader renders behind the volumetric fog