Merge "Rename `libsyn` to `libsyn2`" into main am: 8449944a50

Original change: https://android-review.googlesource.com/c/platform/development/+/2601328

Change-Id: Ie6e0ebec2a11488c4c678fe10a94d157d6a24006
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>