feat: OPTIC-1265: Improve error pages

[mcanu]

[netlify]

✅ Deploy Preview for heartex-docs canceled.

Name	Link
🔨 Latest commit	24bd9e4
🔍 Latest deploy log	https://app.netlify.com/sites/heartex-docs/deploys/67d0a04582598400086a4f31

[netlify]

✅ Deploy Preview for label-studio-docs-new-theme canceled.

Name	Link
🔨 Latest commit	24bd9e4
🔍 Latest deploy log	https://app.netlify.com/sites/label-studio-docs-new-theme/deploys/67d0a045d8cc320008df97ae

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.19%. Comparing base (c669648) to head (24bd9e4).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #7196   +/-   ##
========================================
  Coverage    77.19%   77.19%           
========================================
  Files          187      187           
  Lines        14503    14496    -7     
========================================
- Hits         11195    11190    -5     
+ Misses        3308     3306    -2     

Flag	Coverage Δ
pytests	77.19% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[mcanu]

/fm sync

Workflow run

[mcanu]

/git merge develop

Workflow run
Successfully merged: 21 files changed, 288 insertions(+), 70 deletions(-)

[mcanu]

/fm sync

Workflow run