[Bug] Newtype enum variant deserialization failure when used with #[serde(flatten)]

[greenhat616]

previous repo issue: dtolnay/serde-yaml#344

playground link: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=5149fbeb995a06e94ecb7e4508ca3b0c

And I have test it via serde_yaml_ng::from_value::<EnumTy>::(&value) , it report the same error too.

The sample enum could be:

#[derive(Debug, Clone, Serialize, Deserialize, Default, PartialEq)]
pub enum ProfileItemType {
    #[serde(rename = "remote")]
    Remote,
    #[serde(rename = "local")]
    #[default]
    Local,
    #[serde(rename = "script")]
    Script(ScriptType),
    #[serde(rename = "merge")]
    Merge,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default, Eq, PartialEq, Hash)]
pub enum ScriptType {
    #[default]
    #[serde(rename = "javascript")]
    JavaScript,
    #[serde(rename = "lua")]
    Lua,
}

#[derive(Default, Debug, Clone, Deserialize, Serialize, Builder, BuilderUpdate)]
pub struct ProfileShared {
    /// profile item type
    /// enum value: remote | local | script | merge
    #[serde(rename = "type")]
    pub r#type: ProfileItemType,
}

#[derive(Default, Delegate, Debug, Clone, Deserialize, Serialize, Builder, BuilderUpdate)]
pub struct MergeProfile {
    #[serde(flatten)]
    pub shared: ProfileShared, // <-- This would be failed when deserialization 
}

Besides the #[serde(flatten)] usage, Just pass a Value::TaggedValue to serde_yaml::from_value always failed.

Any ideas could be shared here? Thank you.