Add retries on a test.

This should hopefully make it less flaky on presubmit
while we work on a fix. This seems better than just
disabling the test to keep the coverage.

Bug: 288381777
Test: atest SafetyCenterActivityFunctionalTestCases
Relnote: N/A
Change-Id: Icb289244a93a953754deceda6699bfe0be2bf87c