Merge "BpfNetMaps.java - uid U32 -> S32" am: 714fd251a1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2219638

Change-Id: I660592c598be7599c97b4520c9db5eba04cd5c26
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>