Align style of Publicize (Sharing) settings with the rest of the Preference screens

[khaykov]

Currently, Publicize (Sharing) settings utilize custom design with white cards. We need to determine do we want to align it visually with other preference screens or not, and if yes, change it's style.

[SylvesterWilmott]

Using the design styles used in other settings screen in the Android app as well as utilising the separator logic defined in #10032 :

Note: social icon assets have been updated and replaced