Refactored usage of StaticMockFixtureRule by ExtendedMockitoRule

The former is being deprecated by the latter.

Test: atest AppSearchManagerServiceTest
Bug: 281577492

Change-Id: I342ae3b37194862323b4b7001188defedd4560b6
Merged-In: I342ae3b37194862323b4b7001188defedd4560b6
(cherry picked from commit baddaf073ce24a40a22e5373a780200ac9014a2b)
1 file changed