Merge "Only load APNs once at first boot" into main am: ba6640191f

Original change: https://android-review.googlesource.com/c/platform/packages/providers/TelephonyProvider/+/2769564

Change-Id: Ic5a87100d246016ad13fd43f3a948e4a7f3d5c25
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>