Allow test nav helper to be re-entrant

[DerekCrannaford]

Checklist

• [Y ] I'm using the correct PHP Version (8.1 for current, 7.4 for legacy).
• [Y ] I've added comments to any new methods I've created or where else relevant.
• [n/a ] I've replaced magic method usage on DbService classes with the getInstance() static method.
• [n/a ] I've written any documentation for new features or where else relevant in the docs repo.

Description

New designs now emerging on whole module at -->navigation level (not just specific actions)
So Codeception test must check if first step navbar click flipped over into BootStrap tpl before trying drop menu click-actions

Changelog

Update Codeception nav-bar helper