fix: shared requests aborted

[andreas-karlsson]

Hi There, I just made a Pull Request!

Due to the client cache resolve requests can be shared. We keep a ref-count in the cache entries and clear the entry when the ref-count drops to zero. However we inadvertently aborted the original request as soon as any ref was aborted. Added tests to show this and a fix.

:heavy_check_mark: Checklist

• [ ] All tests are passing
• [ ] Relevant documentation updated
• [ ] linter/style run on changed files
• [ ] Tests added for new functionality
• [ ] Regression tests added for bug fixes
• [ ] Tested in a corresponding example app