[Unfold transition] Do not play haptics when hitting a timeout on folding

This change makes unfold haptics play only
when unfolding a foldable device. It won't play
haptics after starting folding and hitting
the animation timeout.

It is implemented by checking that we play
haptics only for the first time after receiving
unfold callback from the system.

Bug: 265279748
Test: atest com.android.systemui.unfold.UnfoldHapticsPlayerTest
Test: manual
Change-Id: I18b6c0895c76e168cacc5492f134ca7634bc1ebe