Add isDefault Flag to default Top Site entries

[ekager]

Why/User Benefit/User Problem

Currently, on first install, we check the current locale and then add default top sites to the generic top sites storage. With an impending deadline, this was kind of a hack. Adding a flag would allow us to have better telemetry, be able to position them where we want them, and edit/change/remove those default top sites if necessary, ie when the locale or endpoint for these sites changes

What/Requirements

Will require AC work to edit the DB entry to contain a boolean like isDefault, and then use that flag in Fenix when adding default top sites on first install.

Acceptance Criteria (how do I know when I’m done?)

We can tell (for new users only :/ ) which are the default top sites for telemetry and for editing/changing those if needed

┆Issue is synchronized with this Jira Task

[ekager]

Opened mozilla-mobile/android-components#6331 for AC changes required

[gabrielluong]

Opened mozilla-mobile/android-components#6331 for AC changes required

Taking on the AC changes. 👍

[liuche]

Looks like the AC changes are ready.

[liuche]

This is the pre-req for updating the default top sites telemetry, and is done.

[liuche]

@ekager will add the bug tracking the remaining work to the sprint backlog.