[automerger skipped] (IMS Threading refactoring) Telephony IMS classes to...

[automerger skipped] (IMS Threading refactoring) Telephony IMS classes to schedule IMS callback on the main thread am: 9db36867 am: 3b9f035d am: fa8a5ff0 am: 164cded9 -s ours

am skip reason: Merged-In Ib047b7daadf9e979983552a3a027bb80b5250302 with SHA-1 635a771f is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ims/+/1965459

Change-Id: I73b5625f554c51a49d23eb6a41a201601b3b184f