[MediaCarousel] Extend disablePagination to disableScrolling

This CL extends the disablePagination option in MediaHostState
to disableScrolling. When disableScrolling is enabled, all scroll events
to the MediaCarousel will be ignored.

Bug:398019996
Flag: com.android.systemui.status_bar_popup_chips
Test: Make sure the carousel can not scroll when shown in a popup
Test: Make sure the carousel scrolling is unchanged in other locations

Change-Id: Iae23b94d130cee95f54d17379bf3cf4a21f79b4f