Desks: Use correct displayId for active desk look up

When entering overview in CD from desktop, the active desk id should be
set using the CD displayId, otherwise when recents finishes, the desk
may not get deactivated as intended.

Flag: com.android.window.flags.enable_multiple_desktops_backend
Bug: 415030147
Test: manual
Change-Id: Ic3d07b7ab380eabfdaf41cfce78ee66026414762