datapath: Clean up stale ipvlan maps
datapath: Clean up stale ipvlan maps

When endpoints are not restored, we need to sweep the maps dir for
ipvlan maps and remove them.

Fixes: #7066
Fixes: 3144e8e1e557 ("cilium, ipvlan: prefix entry tail call map with cilium")

Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@cilium.io>

tklauser/cilium,cilium-team/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,cilium-team/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium