[TOFU] Validate full cert chains before displaying dialog am: b0ee00ddf3 am: 5567f0a64d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Wifi/+/22772854

Change-Id: I3d587e830e4d82a41bb5db6f7a0f9d31dfa6b0cf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>