SystemUI: Allow snoozing SD card notification unconditionally

FBE devices usually don't support adoptable therefore resulting
in SD notification popping up every boot which may be quite annoying.

This (kinda) reverts commit b138cb2c.

Change-Id: I4c76d05c6950b4f605450a034c1d76773f003e77
(cherry picked from commit 7b11a554)