feat: sync llama.cpp to b9222

[github-actions]

🤖 Automated llama.cpp sync

This PR was automatically created/updated by the daily sync workflow.

Changes:

• Updated llama.cpp submodule from b9204 to b9222
• Regenerated bindings and build files

Verification:

• ✅ Bootstrap script completed successfully (including iOS Metal compilation)
• ✅ iOS frameworks build completed successfully (macOS job)
• ✅ Android libraries build completed successfully (Ubuntu job)
• ✅ C++ unit tests passed
• ✅ TypeScript build completed successfully

📋 llama.cpp changes (b9204 → b9222)

• 9a532ae hexagon: add support for TRI op (#22822)
• b734044 ggml-hexagon: add PAD op HVX kernel (#23078)
• 5cbaa5e docker : add OCI image labels for version and build date (#21653)
• 45b455e common : remove hf cache migration (#23266)
• 3a9c1b8 ui: Update KaTeX package and clean up logs from sass warnings (#23275)
• b9a2170 feat: add scroll-to-bottom button to chat + prevent forced scroll down (#23270)
• 1ff0fc1 ui: Refactor models store, MCP service, and gate logs behind VITE_DEBUG (#23236)
• a135ec0 ui: Centralize monospace font styles in app.css (#23272)
• 232f466 webui: fix Tailwind v4 utility classes missing when built via cmake (#23253)
• 49c21f9 llama: initialize pre-norm embedding mask flag (#23256)
• 77e38d6 add myself to conversion (#23261)
• 053e01d ci : added kleidiai-server to server-self-hosted workflow (#22435)
• c3f95c1 scripts : allow wc2wt with an existing branch (#23189)
• 0caf2a1 sycl: scalar SWAR byte-subtract in Q6_K MMVQ dot product (#22156)
• 5511965 sycl: route small f32 matmuls to oneMKL, bypass oneDNN (#22150)
• e98bcfe sycl : fix error when use -mg 1 error (#23140)
• 1867a0c update bid to match each layers MTP source (#23237)
• dd7cad7 cmake : do not check for bin install dir (#23234)

Please review and merge if all checks pass.