Replace libchrome NumberToString with std::format am: 1f46f5bb7b am: 5da9c08bdd

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3310753

Change-Id: Icf36dab4b369723658f55cc10122a833dc31a261
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>