MAHOUT-743: Add regression test for async amplitude chunk bounds

[Rutuja123-dos]

Purpose of PR

This PR adds a regression test for the async amplitude encoding chunk bounds issue (#743).
The Problem: When performing amplitude encoding in chunks, the kernel must respect the specific chunk_len for the offset provided, rather than the full state_len. Out-of-bounds writes can occur if the bounds are not correctly constrained.

Related Issues or PRs

Closes #743

Changes Made

• Bug fix
• New feature
• Refactoring
• Documentation
• Test
• CI/CD pipeline
• Other

Breaking Changes

• Yes
• No

Checklist

• Added or updated unit tests for all changes
• Added or updated documentation for all changes
• Successfully built and ran all unit tests or manual tests locally
• PR title follows "MAHOUT-XXX: Brief Description" format (if related to an issue)
• Code follows ASF guidelines

[ryankert01]

We don't test external package

[Rutuja123-dos]

Thanks for the feedback @ryankert01. You’re right, I see now that this test is just checking NumPy and not the actual project logic.
I’m going to look back at the source code to find the exact function that’s causing the out-of-bounds issue. I'll rewrite the test to call that function instead and update my PR. Thanks for pointing that out

[400Ping]

Please actually take a good look of the codebase before you submit a PR for it, you also added some unnecessary comments and your reply seems very GPT like answer. I do encourage using AI agents stuff to write code, but you need to understand the context and what it is producing. Don't just upload whatever it says like a no-brainer.

[Rutuja123-dos]

Closing this for now. I've realized my local build environment is a bit too limited for these GPU/Rust changes and it's becoming a major blocker. I’m going to step back from this one and look for some other areas to contribute instead. Thanks for the help.