pkg/endpoint: Don't return error on update while regenerating
pkg/endpoint: Don't return error on update while regenerating

This restores the state to before #3043 in terms of not returning an error if
an endpoint is patched while being regenerated. It is an workaround fix to avoid
further CI failures. The long term fix is being developed via GH-3058

Signed-off by: Ian Vernon <ian@cilium.io>
Signed-off-by: Thomas Graf <5f50a84c1fa3bcff146405017f36aec1a10a9e38@cilium.io>

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