GPUParticles with trails enabled have inconsistent rendering for particles at high speed and big lifetime

### Tested versions

- Reproducible in 4.2.2 stable mono

### System information

Godot v4.2.2.stable.mono - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4070 SUPER (NVIDIA; 31.0.15.5212) - AMD Ryzen 7 3800X 8-Core Processor (16 Threads)

### Issue description

https://github.com/godotengine/godot/assets/28916549/0eab1d86-fc5a-44a5-955c-72bfece537eb

When using GPUParticles with trails enabled, if a particle has a high initial velocity, particles starting position does not stay in place, and flickers between frames, causing the effect from the above

I expect particles starting position to remain still unless trail's lifetime ends.

I also experimented with speed scale and got very weird flickering like in the example below:

https://github.com/godotengine/godot/assets/28916549/06a81aac-4a68-44c2-87fd-bf3720301d1f

### Steps to reproduce

- Create a GPUParticle3D
- Add new ParticleProcessMaterial
- Enable Trails
- In ParticleProcessMaterial->Spawn->Velocity set initial velocity min to something like 150
- In Draw Passes add new RibbonTrailMesh or TubeTrailMesh
- In Pass settings create a new Material
- In Material->Transform enable Use Particle Trails

### Minimal reproduction project (MRP)

[effects_bug.zip](https://github.com/user-attachments/files/16145952/effects_bug.zip)

Start with the attached effects_bug.zip minimal reproduction project and follow the listed GPUParticles3D trail setup using a high initial velocity. Compare the particle start position and speed-scale behavior across frames; the issue is complete when the trail rendering remains stable without flickering or moving its starting position unexpectedly.

Written by the indexing model from the issue text.