Static-optimize `value`/`checked on `<input>`

[nolanlawson]

Follow-up to #4763

To solve #4763, the quickest path is to disable the static content optimization for <input checked>/<input value>. This allows value and checked to be 1) treated purely as props, not attributes, and 2) not to be serialized in SSR output.

However, long-term, we probably want to static-optimize <input checked>/<input value> so that it can get the perf boost. This would require some extra logic to allow VStaticParts to have props as well as attributes.