Site picker: update behavior to better match other platforms

[mattmiklic]

Our site picker on iOS differs from Android and the web in some small but important ways. I'm creating this issue to track the changes we should make on iOS to better align its picker with other platforms.

In Calypso, if the user has 11 or more visible sites, we show the 5 most recently-accessed sites on top of the list. On iOS, we only show 3 recent sites, and the threshold appears to be based on the user's total number of sites, not just what's visible. In Calypso, we show a border to divide the list of 5 recent sites from the rest of the list. On iOS, there is no divider.

• [ ] Only show recently accessed sites at top of site picker if 10 or more are visible.
• [ ] Show 5 recent sites rather than 3.
• [ ] Add a 1px greyLighten20 horizontal line to separate most recent sites from rest of sites (Example)

[stale[bot]]

This issue has been marked as stale because:

• It has been inactive for the past year.
• It isn't in a project or a milestone.
• It hasn’t been labeled [Pri] Blocker, [Pri] High, or good first issue.

Please comment with an update if you believe this issue is still valid or if it can be closed. This issue will also be reviewed for validity and priority (cc @designsimply).

[designsimply]

Tested with WPiOS 13.3.0.0 (TestFlight) on iPhone 6S iOS 13.1.2 and found that the latest most-recently-accessed sites is still limited to 3 on WPiOS instead of 5 and that there is no separator in place.

^{Tested with WPiOS 13.3.0.0 (TestFlight) on iPhone 6S iOS 13.1.2.}

Android screenshot for comparison:

^{Tested with WPAndroid alpha-190 (13.3 alpha) on Pixel 3 Android 10.}

[kean]

The picker was re-implemented in 25.3. It does have the "recent sites" section.