Enable dagger fastInit on CarSystemUI

This shrinks the size of classes.dex by about 3% (~490KiB) and mildly reduces startup time as well, as measured by the following SystemUIBootTiming_ metrics (averaged over 10 successive startups):

- StartServices: 649.1->629.1 ms
- StartSecondaryServices: 49.3->57.7 ms
- DependencyInjection: 2.2->0.2 ms

Test: presubmit, verify size and startup improvements on seahawk
Bug: 314352175
Change-Id: I2cc246eebb883b182cde5b9da1ad2f4c3b46b63f
1 file changed