Add Surface.clearFrameRate API

This API is same as using setFrameRate with 0 as frame-rate value. But
this causes confusion, as the remaining two arguments are ignored, when
frame-rate is 0.

Bug: 241096917
Test: android.graphics.cts.SetFrameRateTest#testClearFrameRate
Change-Id: I1324c64ac75dacb78a733df2b91d7a5b46fc7455