Apply review suggestion for r3548004361 in configurator test file

[Copilot]

This PR addresses a single review comment asking for the suggested change to be applied exactly, with no unrelated modifications. Scope is intentionally limited to the referenced comment target.

• Targeted change

  • Added the missing trailing newline in:
    • tests/unit/test_configurator/test_configurator_configure_otel.py
  • No production code or test logic was changed.

• Why this matters

  • Aligns the file with style/tooling expectations from the review suggestion and removes the formatting-only finding.

-        mock_config_response_propagator.assert_not_called()
\ No newline at end of file
+        mock_config_response_propagator.assert_not_called()