✨ Quality: improve useLanguageDetection robustness and error handling

[galiprandi]

💡 What: Added robustness safeguards and improved error handling in the useLanguageDetection hook.
🎯 Why: To ensure consistency with other AI hooks and prevent UI hang states due to unhandled AbortErrors or silent warmup failures.
📊 Impact:

• Prevents property injection by checking for base constructors.
• Handles AbortError gracefully by resetting status to 'idle'.
• Logs failures during the warmup phase for better observability.
• Achieves higher test coverage for edge cases.
  ✅ Verification:
• Ran pnpm test lib/hooks/useLanguageDetection.test.ts.
• Verified overall project health with pnpm test, pnpm lint, and pnpm build.

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PR created automatically by Jules for task 2214552202086822241 started by @galiprandi

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