Fix parameters in FullScreenMagnificationGestureHandlerTest

The singature of FullScreenMagnificationController#setScaleAndCenter is
(int displayId, float scale, float centerX, float centerY, ...), but
some test calls it with wrong arguments.
This fixes it.

Bug: 354696546
Test: FullScreenMagnificationGestureHandlerTest (with I482c121cbc0d1da64e6d22aabcc3894caf89bb18)
Flag: EXEMPT bugfix
Change-Id: Ic4a32853bae545650f9d0f9a5c908ba05443dd7d