Mobile Mode modernization

[mdmintz]

Mobile Mode modernization

The default values for user_agent and device metrics are getting out-of-date. Need to switch those to something more recent.

Based on tests, using "Android WebView 110" (In-App Browser) appears to get the best results. The user_agent should match this device. (Note that this will only used for setting default values when the user doesn't specify a user_agent with device metrics.)

---

Info about "Android WebView":

"Android System WebView lets applications display browser windows in an app instead of transporting the user to another browser. Android developers use WebView when they want to display webpages in a Google app or other application."

[mdmintz]

This was resolved in 4.20.0 - https://github.com/seleniumbase/SeleniumBase/releases/tag/v4.20.0