Merge "Update javadoc of TelephonyManager#isModemEnabledForSlot" am: be6e81a4ea am: 621565a21a am: bc966d1ac1 am: 67bd6aa180

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1878022

Change-Id: I47fc3c3a1c79eb534cea4e9d83c615dce83b79e4