Merge "Allow GenericDocument accept a String property longer than 20_000." into sc-dev am: 7ae2dec8ba am: 77a3a5242c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15306276

Change-Id: Ib0f48c370ee4856b4a5b460bd915eaf5ddb8861e