CLC-4585: fix broken Selenium production build

On one of the Selenium specs, I changed the order of set up steps.  In the looping real-user tests, the browser was always initialized first, followed by loading the test UIDs for real user tests. In the Tele-BEARS test, I reversed that order.  However, the prod build chokes when loading the test UIDs, since the file does not exist for the prod build.  The test then attempts to quit a browser that isn't there, which kills the build.  I've moved the browser startup to the beginning of the test, which will prevent the error.