Comparing thresholds to the gesture directly.

As a mistake, we were comparing the value of transformed translations to
the thresholds, but they should be compared to the finger translation
directly instead.

Test: manual. Verified magnetic detach and attach works as expected.
Test: MagneticNotificationRowManagerImplTest
Flag: com.android.systemui.magnetic_notification_swipes
Bug: 403576232
Change-Id: I1810603c7dc2e21efd36a9ff1e35dd8c9063a090