fix[notask]: prevent Android Parakeet GPU backend discovery

[ishanvohra2]

🎯 What problem does this PR solve?

• Fixes Android Parakeet crashes caused by Vulkan/OpenCL backend discovery during CPU-only model loading.
• Aligns Android prebuild packaging with the current runtime policy where Parakeet forces useGPU=false on Android.

📝 How does it solve it?

• Updates packages/transcription-parakeet/CMakeLists.txt so Android loose ggml backend staging only includes CPU backend modules.
• Leaves Linux/non-Android backend staging unchanged, while avoiding Vulkan/OpenCL .so discovery on Android until those GPU paths are stable.
• Bumps @qvac/transcription-parakeet from 0.7.1 to 0.7.2 and adds the corresponding changelog entry.

🧪 How was it tested?

• Rebuilt the Parakeet Android prebuild and reran the mobile Parakeet e2e flow locally.
• Confirmed the Parakeet TDT model loads successfully and multiple Android transcription tests pass without the prior SIGABRT.

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[github-actions]

Tier-based Approval Status

**PR Tier:** TIER1

**Current Status:** ✅ APPROVED

**Requirements:**
- 1 Team Member approval ✅ (1/1)
- 1 Team Lead OR Management approval ✅ (1/1)



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[github-actions]

Mobile integration tests — @qvac/transcription-parakeet (iOS)

Result: passed

metric	value
Devices passed	2
Devices failed	0
Test cases total	6
Test cases passed	6
Test cases failed	0
Test cases skipped	0

View workflow run

[GustavoA1604]

/review