chore: add tests for esphome issue 4838

[bdraco]

esphome/issues#4838

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (87c0fcc) 99.52% compared to head (a607a5f) 99.52%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #32   +/-   ##
=======================================
  Coverage   99.52%   99.52%           
=======================================
  Files           5        5           
  Lines         210      210           
  Branches       30       30           
=======================================
  Hits          209      209           
  Misses          1        1           

Files	Coverage Δ
src/bluetooth_data_tools/__init__.py	100.00% <100.00%> (ø)

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