refactor: replace try/except KeyError with safe dict.get() for zone c…

[KJonline]

…omparison

• Use .get("props", {}).get("zone") instead of direct key access in get_device_data
• Remove KeyError exception handler and warning log for missing zone data
• Only compare zones when both product_zone and device_zone exist
• Add test verifying TRV devices without zone props are silently skipped

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.96%. Comparing base (bce43e8) to head (153dad2).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #141      +/-   ##
==========================================
- Coverage   99.96%   99.96%   -0.01%     
==========================================
  Files          30       30              
  Lines        2595     2594       -1     
  Branches      293      293              
==========================================
- Hits         2594     2593       -1     
  Partials        1        1              

Flag	Coverage Δ
unittests	99.96% <100.00%> (-0.01%)	⬇️

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Files with missing lines	Coverage Δ
src/helper/hive_helper.py	100.00% <100.00%> (ø)

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