RESTRICT AUTOMERGE Ignore weak symbol difference in libc++ ABI check am: ddcf30d384 am: 76927ad594

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libcxx/+/18607875

Change-Id: I072985a92be90315ebc430b51bc777d05a5a1a1d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>