Add setEditChoicesBeforeSending to RemoteInput

Allow apps to specify whether users should be able to edit smart replies
before sending them.

Bug: 111438374
Test: atest RemoteInputTest
Test: mp /vendor/google_experimental/users/cinek/Notify, post a notification with "Edit choices before send"
Change-Id: I9a37216916f05152d8ab7061ffa121948de0976a