[PadSkinningStreamBuffers branch] SkinnedMesh sample Influences Per-Vertex property cannot be modified

[LB-ArturZieba]

Describe the bug Influences Per-Vertex property in the SkinnedMesh sample cannot be modified and always displays value 4. Due to this the Influences Per-Vertex property is either redundant or not working properly.

This issue also occurs on Android project that was deployed from Windows.

Due to time constraints it was not yet possible to confirm if the issue occurs on the Development branch of AtomSampleViewer.

This issue should be treated as Minor priority.

Steps to reproduce

1. Launch AtomSampleViewer.GameLauncher.
2. Go to Samples > Features > SkinnedMesh.
3. Attempt to modify the Influences Per-Vertex property.

Expected behavior Influences Per-Vertex property can be modified, or is removed if expected to be unmodifiable.

Actual behavior Influences Per-Vertex property cannot be modified.

Video

https://github.com/o3de/o3de-atom-sampleviewer/assets/86952082/98c90a14-444d-4e87-9120-2ab245a7fe23

Found in Branch o3de: https://github.com/aws-lumberyard-dev/o3de/tree/moudgils/PadSkinningStreamBuffers AtomSampleViewer: https://github.com/aws-lumberyard-dev/o3de-atom-sampleviewer/tree/moudgils/PadSkinningStreamBuffers

Desktop

• Device: PC
• OS: Linux
• Version: Ubuntu 22.04.2 LTS
• CPU AMD Ryzen 5 3600X 6-Core Processor
• GPU AMD Radeon RX 5700 XT
• Memory 16GB

[LB-ArturZieba]

This issue is confirmed to occur on Windows and Linux on the o3de Development (a62f43b) branch and o3de-atom-sampleviewer Development (d2890bf) branch.