[Test] Improve or unskip disconnect test in NC PHP app OAuth

[cbcoutinho]

Context

From PR #401 code review - Low priority test improvement.

Current State

Test test_nc_php_app_oauth.py:312 is likely skipped or has issues that need addressing.

Options

1. Unskip the test if it was temporarily disabled
2. Fix the test if it's failing due to timing or environment issues
3. Improve documentation if the test requires specific setup
4. Remove the test if no longer relevant

Investigation Needed

• Determine why test was skipped/disabled
• Review test purpose and current behavior
• Check if test infrastructure has changed

References

• File: tests/server/oauth/test_nc_php_app_oauth.py:312
• Related to PR feat(astrolabe): Nextcloud app UI with PDF viewer, webhooks, and OAuth refresh #401 code review

Priority

Low - Test infrastructure improvement