Add SupportsSafetyCenterRule

Replace use of shouldRunTests boolean and associated @Before blocks
with this rule where possible.

Bug: 279001295
Test: atest SafetyCenterFunctionalTestCases,CtsSafetyCenterTestCases
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:bf54633d18ac3ca26422beb75ff713eebf4835fa)
Change-Id: I936a8255485368d7fed333924794c150acc63be5
Relnote: N/A