[Bug] Invalid PW expressions break test mode

[justinkambic]

Bug summary

The recorder is not handling cases where the user inputs custom PW expressions that are not valid.

Recorder Version

1.0.0

Steps to reproduce

If I edit a selector like: internal:role=combobox[name="Search"i] to
internal:role=combobox[name="Search"i]invalid, then try to launch Test mode, the browser will fail to launch and the recorder is stuck with no way to recover.

Expected behavior

The browser should pick up the error. We could either parse it at input time, ideally, to let the user know the expression won't work before they even persist it, or highlight the input error in some way.

Additional information

No response