Plugin does not run particular test cases from test run, it runs all from test suite

[EvgeniyRub]

Describe the bug
When we create test run in TestRail and choose particular test case from test suite always all test cases run instead of what was choosen.

To Reproduce
Steps to reproduce the behavior:
on TestRail
1.Create test suite
2. Create 2 test cases (All cases marked @pytestrail.case('CXXX') in pytest)
3. Create Test plan
4. Create test run and choose only 1 test case to test
5. Run test: pytest -testaril --tr-run-id=1115 /tests

Expected behavior
Only one test case runs from test run

Actual behavior
All test cases run