message: make error message about lack of workers kv entitlements more clear
diff: @@ -76,7 +76,7 @@ fn help(error_code: u16) -> &'static str {
  // legacy namespace errors
  10021 | 10035 | 10038 => "Consider moving this namespace",
  // cloudflare account errors
  - 10017 | 10026 => "Check your account settings in the Cloudflare dashboard",
  + 10017 | 10026 => "Workers KV is only available on the Workers Unlimited plan, please upgrade your account to use",
  _ => "",
  }
  }
  