Re-enable the kis_image_animation_interface_test test

This probably shows a real error: the time range now starts
with 0, but KisTimeRange::infinite starts with 1.

QDEBUG : KisImageAnimationInterfaceTest::testFramesChangedSignal() 1 KisTimeRange(0, -2147483648) 2 KisTimeRange(10, -2147483648)
FAIL! : KisImageAnimationInterfaceTest::testFramesChangedSignal() Compared values are not the same

Loc: [/home/boud/dev/krita/libs/image/tests/kis_image_animation_interface_test.cpp(188)]