Update background text images in recovery

Locale texts are missing in the recovery log due to an extra empty
locale chunk in the png file. Fix the bug in the app and regenerate all
the background texts and compress the file with pngcrush + zopflipng.

Bug: 34054052
Test: Locale texts logged successfully on angler
Change-Id: I89f823a53c1eb69756183e8e11113216d093304f