[Test] Skip Isolation Test on Remote

[lloyd-brown]

This PR changes the test_managed_jobs_config_labels_isolation test to not happen on a remote server since if its running on kubernetes in some custom environments we won't have access to the underlying kube context.

Tested (run the relevant ones):

• Code formatting: install pre-commit (auto-check on commit) or bash format.sh
• Any manual or new tests for this PR (please specify below)
• All smoke tests: /smoke-test (CI) or pytest tests/test_smoke.py (local)
• Relevant individual tests: /smoke-test -k test_name (CI) or pytest tests/test_smoke.py::test_name (local)
• Backward compatibility: /quicktest-core (CI) or pytest tests/smoke_tests/test_backward_compat.py (local)