fix(v2): re-deprecate h3 v1 syntax in createMiddleware

[birkskyum]

Re-deprecate h3 v1 middleware.

It's deprecated because we'd like people to use H3 v2 middleware instead, so we don't need the h3 v1 adapter etc

Mistakenly un-deprecated here:
9c479ee

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commit: 0d9ba53

[atilafassina]

thanks

once we have the JSDoc updated and this PR merged, it would also be nice to communicate it to the docs via an issue linking to this PR too - not an immediate requirement though, can be done later - we have plenty of documentation to adjust