Fix CTS MagnifierTest for Wear devices

Currently, the test testSourceBounds_areAdjustedWhenInvalid is failing
on some of WearOs devices.

Adjust height and width of FrameLayout to make this test pass.

Bug: 229113238

Test: run cts --html-in-zip --skip-all-system-status-check \
 --skip-device-info --skip-preconditions -m CtsWidgetTestCases -t \
 android.widget.cts.MagnifierTest#testSourceBounds_areAdjustedWhenInvalid

Change-Id: Id47956a9b1f9da5f3444a06ed58ed5173128cce6
1 file changed