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Make admission webhooks conversion convert CONNECT body correctly

Fix #59759.

1. Make apiserver pass connectRequest.Options directly to the admission layer. All other information in rest.ConnectRequest is present in admission attributes.
2. Make the scope.Kind of pod/attach, pod/exec, pod/portforward, node/proxy, service/proxy to their respective options Kind, instead of the parent Kind.

I've tested it locally, the conversion is working correctly for "kubectl attach". I'll add e2e tests.

I'll keep this to myself until I add the tests, but cc @mikedanese @liggitt RE. https://github.com/kubernetes/kubernetes/pull/66633.