Skip jarjar repackage on SystemUI-tests-base and SystemUI-tests

as a temporary solution to fix the SystemUITest
build performance issue.

Test: CI and check the jarjar action of these 2 modules are not on
      build critical path
Bug: 328030976
Flag: NONE
Merged_In: I0679b4d05bdaedd6ce7b924e6e79b9a673b11950

Change-Id: I68a8da3658d7ca9829e3c51278a88386517acda6