How to reproduce:
1. Create a new project using the Cinematic Studio template
2. Observe the warnings in the Console window when the project loads

Expected result: No warnings in the Console window
Actual result: Warnings are thrown in the Console window
{code:java}
Shader warning in '[SimpleHeadsAndTrails] [Trail Bodies] Initialize Particle Strip': use of potentially uninitialized variable (GetParticleIndex) at kernel CSMain at SimpleHeadsAndTrails.vfx(124) (on d3d11)
{code}
{code:java}
Shader warning in '[SimpleRibbon] [Ribbon] Initialize Particle Strip': use of potentially uninitialized variable (GetParticleIndex) at kernel CSMain at SimpleRibbon.vfx(116) (on d3d11)
{code}
Reproducible with: 2021.3.31f1
Not reproducible with: 2021.3.301
Could not test with: 2022.3.10f1, 2023.1.16f1, 2023.2.0b12, 2023.3.0a8 (Template is not available)

Reprocuded on: Windows 10 (22H2), macOS 13.6 (intel)

Notes: the issue is also reproducible with 3D (HDRP) Template