Merge "Improve some External Storage Notification texts on TVs" am: 894c63654d am: ce25438e38

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1621095

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Idf55428bd50e83ede57d0535bae788001bbf4626