Function expand_async_drops

pub(super) fn expand_async_drops<'tcx>(
    tcx: TyCtxt<'tcx>,
    body: &mut Body<'tcx>,
    context_mut_ref: Ty<'tcx>,
    coroutine_kind: CoroutineKind,
    coroutine_ty: Ty<'tcx>,
)

Expand Drop terminator for async drops into mainline poll-switch and dropline poll-switch