Test VpnManager event for CATEGORY_EVENT_IKE_ERROR am: 744c8967e5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/18116402

Change-Id: I54778581c227f21a455bc020539e825db2bdf62a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>