Add auto_data_switch_availability_stability_time_threshold to control auto...

Add auto_data_switch_availability_stability_time_threshold to control auto data switch am: 42505a8d am: 7abd1af2

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/2377339



Change-Id: I2c257eea9ee693e0d0738c59444fab5344e8cce2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>