fix(request): properly compute absolute url

[phil-davis]

Backport #257 to 5.1 branch

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.50%. Comparing base (ff1b7b9) to head (5205ca0).
⚠️ Report is 3 commits behind head on 5.1.

Additional details and impacted files

@@             Coverage Diff              @@
##                5.1     #262      +/-   ##
============================================
+ Coverage     94.14%   94.50%   +0.35%     
- Complexity      266      267       +1     
============================================
  Files            15       15              
  Lines           871      928      +57     
============================================
+ Hits            820      877      +57     
  Misses           51       51              

☔ 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.