fix: OPTIC-1827: Fix information exposure through exception when validating S3 connection

[mcanu]

Stop displaying error exception to user and exposing internal info. Added logging for tracking internally.

[netlify]

✅ Deploy Preview for label-studio-storybook canceled.

Name	Link
🔨 Latest commit	c8e2c4c
🔍 Latest deploy log	https://app.netlify.com/sites/label-studio-storybook/deploys/67f019358353120008f832e1

[netlify]

✅ Deploy Preview for heartex-docs canceled.

Name	Link
🔨 Latest commit	c8e2c4c
🔍 Latest deploy log	https://app.netlify.com/sites/heartex-docs/deploys/67f019356692c400080c107f

[netlify]

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

Name	Link
🔨 Latest commit	c8e2c4c
🔍 Latest deploy log	https://app.netlify.com/sites/label-studio-docs-new-theme/deploys/67f0193551a73300084f4afb

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 77.32%. Comparing base (a521eaa) to head (c8e2c4c).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
label_studio/io_storages/s3/serializers.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7310      +/-   ##
===========================================
- Coverage    77.33%   77.32%   -0.01%     
===========================================
  Files          188      188              
  Lines        14605    14608       +3     
===========================================
+ Hits         11295    11296       +1     
- Misses        3310     3312       +2     

Flag	Coverage Δ
pytests	77.32% <50.00%> (-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