Repro steps:
- start a new project using 2023.1.16f1 and the 3D HDRP core project

- using Windows 11 or Windows 10

- notice the warnings in the console:

Shader warning in '[SimpleRibbon] [Ribbon] Initialize Particle Strip': use of potentially uninitialized variable (GetParticleIndex) at kernel CSMain at SimpleRibbon.vfx(166) (on d3d11)

Shader warning in '[SimpleHeadsAndTrails] [Trail Bodies] Initialize Particle Strip': use of potentially uninitialized variable (GetParticleIndex) at kernel CSMain at SimpleHeadsAndTrails.vfx(174) (on d3d11)

Expected result: no warnings or errors should appear in the console, when creating a new project.
Also reproduces in 2023.2.0b11
Cannot repro in 2023.1.7f1