Use longer timeout of onFinishStylusHandwriting

All StylusHandwritingTest should consistently use standard timeout
for onFinishStylusHandwriting event.

Bug: 430816360
Test: atest StylusHandwritingTest
Flag: EXEMPT test_only
Change-Id: Ia4863f2fcba6cb69dd258992b439e4099b7a26b6
1 file changed