Setting min sdk of MSDL lib to 31.

This change allows an easier integration with Launcher and adds a
backwards compatibility functionality to vibrate without any vibration
attributes.

Test: presubmit
Flag: NONE usage of the library is flagged elsewhere
Bug: 344654090
Change-Id: Ib2e3c39f5ef9fc7a74938181375332ede84295f6
2 files changed