fw/base: work around mockito upgrade issues

- b/397768983: Force the SAM conversion because kotlinc 1.9 does not reliably pick the intended overload
- b/397769063: Work around bug in CachedAppOptimizer that newly gets detected by existing test

Test: atest com.android.systemui.stylus.StylusManagerTest com.andorid.server.am.CachedAppOptimizerTest
Flag: TEST_ONLY
Change-Id: Ib6eacfefe72357db42cddd6f2e720cd81d95d360