Handle non scrollable UIs

The app settings UI where we look for storage settings does not seem to
be scrollable anymore. Handle the resulting exception.

Fixes: 159056472
Test: atest StorageHostTest#testFullDisk
Change-Id: I79d38a3a960aea409e1cace413b24b5d16062b28
Merged-In: I79d38a3a960aea409e1cace413b24b5d16062b28
(cherry picked from commit dc6415098a552f1699a61019f53309fd056f93bb)