tests: verify_ordered_items fallback to re.escape if needed

[blackboxsw]

Failures in Jenkins test runner indicate that the recent changes landed in
02f213b didn't account for some search items containing characters which need to be
re.escaped.

Proposed Commit Message

tests: verify_ordered_items fallback to re.escape if needed

When re.search fails with an re.error, it is most likely due
to characters which need escape. Fallback to re.escape in
this case to try harder.

Additional Context

Failing Jenkins job

Test Steps

.tox/integration-tests/bin/pytest tests/integration_tests/bugs/test_lp1813396.py::test_gpg_no_tty

Checklist:

• My code follows the process laid out in the documentation
• I have updated or added any unit tests accordingly
• I have updated or added any documentation accordingly

[TheRealFalcon]

Thanks for helping get our jenkins house in order!