[ProviderModel] Cherry-pick from master ag/15207286, ag/15216391 and ag/15205988

Should not show pwd dialog if it is a saved Wi-Fi entry

The dialog should be scrollable in landscape mode

Fix dialog's UI layout
    - Move down the dialog to overlay the gesture navigation bar.
    - Mobile data layout need to align UX figma

Bug: 192803404
Test: atest InternetDialogTest
Change-Id: Ib5ac6ee909e666b66b41fd0069f6c9528858dd37
Merged-In: Ib5ac6ee909e666b66b41fd0069f6c9528858dd37