sea-orm-cli generates Option<String> instead of Option<PgLtree>

Description

I am using sea-orm-cli to autogenerate entities from my existing PostgreSQL schema:

sea-orm-cli generate entity \
  --output-dir src/entities \
  --database-url "$DATABASE_URL" \
  --with-serde both \
  --serde-skip-deserializing-primary-key \
  --expanded-format

This worked perfectly fine, until I tried to use a table with an ltree column.

The autogenerated entity is using an Option<String> instead of Option<PgLtree>, which then fails to deserialize with an sqlx error:

DatabaseError(Query(SqlxError(ColumnDecode { index: "\"history\"", source: "mismatched types; Rust type `core::option::Option<alloc::string::String>` (as SQL type `TEXT`) is not compatible with SQL type `ltree`" })))

The entity looks like this:

#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel, Eq, Serialize, Deserialize)]
pub struct Model {
    #[serde(skip_deserializing)]
    pub id: i32,
    pub history: Option<String>,
    pub created_at: Option<DateTimeWithTimeZone>,
    pub updated_at: Option<DateTimeWithTimeZone>,
    pub deleted_at: Option<DateTimeWithTimeZone>,
}

Steps to Reproduce

1. Create a PostgreSQL database schema with a table using a nullable ltree column
2. Use sea-orm-cli to convert the schema
3. Try to query the table

Expected Behavior

sea-orm-cli creates an entity using the PgLtree type. Querying the entity succeeds.

Actual Behavior

sea-orm-cli creates an entity using the String (TEXT) type. Querying the entity fails.

Reproduces How Often

100% of the time.

Workarounds

I have looked into the documentation and tried the various sea-orm-cli options, but none of them made any difference.

I tried manually editing the generated entity to switch String->PgLtree, but then it does not compile:

the trait bound `sea_orm::sqlx::sqlx_postgres::types::PgLTree: std::cmp::Eq` is not satisfied
the trait `std::cmp::Eq` is implemented for `std::option::Option<T>`
required for `std::option::Option<sea_orm::sqlx::sqlx_postgres::types::PgLTree>` to implement `std::cmp::Eq`

Reproducible Example

Versions

Tested with the latest version 1.1.2

Start with the sea-orm-cli generate entity command and trace how PostgreSQL column types are mapped for nullable ltree columns. Compare the generated entity with the reported PgLtree and Eq errors; done means the generated entity uses a compatible type and querying the table succeeds.