[Storage] Access.Internal not making pub(crate) visibility on model

[vincenttran-msft]

Azure/azure-rest-api-specs#43001
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All diffs are unrelated just from queues not having been generated against the latest emitter + tsp combo yet, but clearly SentMessageInternal
was untouched:

#[derive(Clone, Default, Deserialize, SafeDebug, Serialize)]
#[non_exhaustive]
#[serde(rename = "QueueMessage")]
pub struct SentMessageInternal {
    /// The time that the message will expire and be automatically deleted.
    #[serde(
        default,
        rename = "ExpirationTime",
        skip_serializing_if = "Option::is_none",
        with = "azure_core::time::rfc7231::option"
    )]
    pub expiration_time: Option<OffsetDateTime>,
...
...