Resolver/Chooser - Fix reuse of textview

Upon reuse of a view by the recyclerview, it was possible to show a
reused view's sublabel, as it was doing incorrect comparisons. Make
sure to always reset the textviews, and hide it if necessary.

Fixes: 150813955
Test: manual, but helpful to have many apps installed and launch the sharesheet
Change-Id: Idb0c03c0b0917104bd9f26cdd9ed33a0055fa6f2