[ARR] Use sysprop for velocity to frame rate mapping.

Use sysprop for velocity to frame rate mapping.

Previously submitted as ag/32630818 which caused test failures due to
static initialization. This is fixed by using the special class name
NoPreloadHolder.

Bug: 404936438
Test: ViewFrameRateTest
Flag: android.view.flags.toolkit_velocity_sysprop
Change-Id: I0cbb6379a3cbdef220e3c2b070cc601c6cbcbd3f