Merge "[framework] Add Unknown error code and java doc for subscriptionId."...

Merge "[framework] Add Unknown error code and java doc for subscriptionId." into main am: df90f3b7 am: 6549112f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3391144



Change-Id: I016e5ea4760dbec5a1ffcf45fcb5ce8b651f8a7f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>