SurfaceFlinger: enhance fakehwc tests

Make fakehwc to run on each composer version from 2.1 to 2.4.
Add specific tests for composer 2.4 refresh rate API.

Test: adb shell /data/nativetest64/sffakehwc_test/sffakehwc_test
Bug: 141329414
Change-Id: Ic49e607d41a9426460b6b3d32fa790d8e2aeb8d4