fix: preserve false value for default_head_tags_disabled in screen renderer update(ghIssue 1413)

[harshithRai]

🔧 Changes

Fix default_head_tags_disabled being silently ignored when set to false in screen renderer settings. The field uses the || operator which coerces false to undefined, causing it to be omitted from the Management API request body. Changed to ?? (nullish coalescing) so that only null/undefined fall back, preserving explicit false values.

This means once default_head_tags_disabled: true was deployed, it could never be reverted to false via the CLI.

📚 References

fixes #1413

🔬 Testing

• Added a unit test in test/tools/auth0/handlers/prompts.tests.ts that calls updateScreenRenderer with default_head_tags_disabled: false and asserts the captured API payload contains false (not undefined). This test fails on the original code and passes after the fix.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.33%. Comparing base (e25b8d2) to head (72f6b7d).

Files with missing lines	Patch %	Lines
src/tools/auth0/handlers/prompts.ts	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1416      +/-   ##
==========================================
- Coverage   80.34%   80.33%   -0.02%     
==========================================
  Files         156      156              
  Lines        7225     7225              
  Branches     1595     1595              
==========================================
- Hits         5805     5804       -1     
  Misses        762      762              
- Partials      658      659       +1     

☔ View full report in Codecov by Harness.
📢 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.