JoystickInputMapperTest: migrate to InputMapperUnitTest

Bug: 283812079
Test: atest frameworks/native/services/inputflinger/tests/JoystickInputMapper_test.cpp
Test: atest frameworks/native/services/inputflinger/tests/CursorInputMapper_test.cpp
Flag: TEST_ONLY
Change-Id: Ia270695bf49cf3453b4d3ad7c0276bc6b7e6a963
3 files changed