Enable hover states for SeekBarPreference

Bug: 201499839
Test: manual testing on pixel device with wired mouse

Note: change was originally set for TM-QPR branch, but now targeting UDC-DEV instead
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:ec11542cbe14f874c9fe17ee4c2a4c4e29ea748c)
Merged-In: Ibbbd0e0ef627576acb5eb3f4acb6d40dcceb0371
Change-Id: Ibbbd0e0ef627576acb5eb3f4acb6d40dcceb0371