It seems the commit replacing deprecated flow by template https://github.com/apache/camel-k/pull/2932 is missing in https://code.engineering.redhat.com/gerrit/jboss-fuse/camel-k.git tag 1.8.0.redhat-00015 (the version received originally with build 2022.3 CK5, currently curator points to 1.8.0.redhat-00016).

It lead to failed e2e/knative/kamelet_test.go - TestKameletChange, as method CreateTimerKamelet (e2e/support/test_support.go) creates invalid kamelet which results in Error state - it has both template and deprecated flow (also deprecated in 1.8? was in 1.6 - https://github.com/apache/camel-kamelets/pull/750, the result kamelet: http://pastebin.test.redhat.com/1068481).
The method is used also in tests e2e/common/cli/bind_test.go, e2e/common/cli/global_kamelet_test.go, e2e/service-binding/service_binding_kamelet_test.go.