* UITests: New tests for save Login prompt

* fixing firebase timing issues when webpage loads

* adding tests for don't save and check the prompt options

* fix detekt issue

* fix reviewer comments

Experiments will not be used before GA and are thus being removed
for performance wins.

Change required for removing description from search suggestion. Implemented
in AC (https://github.com/mozilla-mobile/android-components/pull/5890)

This is required for making the new A-C snapshot work.

This patch refactors the widget layouts so that we can reuse the app icon and do not have to have
another logo resource with different constraints. This will also make it easier to update the
branding in #8277 and #8278.

Reusing the same taskAffinity makes sure that we are launching into a potentially already
existing task from Fennec. Without that we may spawn a new task and will show up twice
in "Recent apps" - with one entry still having a fennec screenshot.