Remove widget from Android new tab page

[bsclifton]

Description

Let's revert to what we had before the widget. Basically:

• stats shows at top (not as a widget)
• 4 top site tiles show by default
• If you disable backgrounds, 8 top sites will show

This is already partially implemented; you can see that code branch if you remove ALL widgets and disable backgrounds. It will show the stats at top and 8 tiles.

Removing the widget will solve the following issues:

• Fast/Hard scroll on widgets brings up the news feed rather than scrolling through the widget
• scroll on NTP widget doesn't work well

As a follow up, we can then do #13714 (maybe showing a Show more similar to iOS)

[alexsafe]

This is how it looks rn:

The translucent background is based on the Slack convos and the referenced figma. Obviously there is no frost glass effect since it's on iOS thing (it CAN be done Android too, but it's custom)

Opinions?

cc @anthonypkeane @bradleyrichter @bsclifton

[bradleyrichter]

perfect @alexsafe !

[kjozwiak]

The above will require 1.38.105 or higher for 1.38.x verification 👍

[Uni-verse]

Verified using 1.38.105, Chromium 101.0.4951.41

Devices:
Samsung Galaxy S21 | Android 12
Samsung Galaxy Tab S7 | Android 12

• Confirmed widget is removed from new tab page.
• Performed upgrade scenario 1.37.116 -> 1.38.105 to ensure the widget is gone.

Tablet	Mobile