Improve error handling for unit registry

[SchrodingersGat]

Reported by sentry.io

[netlify]

✅ Deploy Preview for inventree-web-pui-preview canceled.

Name	Link
🔨 Latest commit	f55f4c6
🔍 Latest deploy log	https://app.netlify.com/projects/inventree-web-pui-preview/deploys/6a80f9439dd7c000080d3328

[codecov]

Codecov Report

❌ Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.82%. Comparing base (e4b23b4) to head (f55f4c6).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12643      +/-   ##
==========================================
- Coverage   86.83%   86.82%   -0.01%     
==========================================
  Files        1449     1449              
  Lines       96884    96889       +5     
  Branches    11185    11185              
==========================================
- Hits        84132    84128       -4     
- Misses      12688    12697       +9     
  Partials       64       64              

Flag	Coverage Δ
backend	90.83% <71.42%> (-0.02%)	⬇️

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Components	Coverage Δ
Backend Apps	92.21% <100.00%> (-0.01%)	⬇️
Backend General	93.75% <ø> (-0.04%)	⬇️
Frontend	79.73% <ø> (ø)

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[github-actions]

💚 All backports created successfully

Status	Branch	Result
✅	1.5.x

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