[ADPF]: boost cpu when processing long text layout

To speed up many calculateBounds invocation happens during scrolling
list view with complicated text view layout from
   TextLine.measure
     -> minikin::Layout::measureText ..
     -> minikin::LayoutCache::getOrCreate

Flag: android.widget.flags.boost_cpu_load_for_long_text_rendering
Bug: 380088697
Test: run PTS test UiBenchLayoutCacheLowHitrateFlingMicrobenchmark
without seeing jank frame by long execution on AbsListView#obtainView

Change-Id: I32c362a50875a50be9a69a5e39151afd9ef3a5fe