postgresql int2 mapped i8 error

Description

Steps to Reproduce

1. define Model

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
#[sea_orm(table_name = "kx_param")]
pub struct Model {
    #[sea_orm(comment = "参数code", primary_key, auto_increment = false)]
    pub param_code: String,
    #[sea_orm(comment = "参数值")]
    pub param_value: Json,
    #[sea_orm(comment = "备注")]
    pub remark: String,
    #[sea_orm(comment = "状态", indexed)]
    pub state: i8,
}

2. create table use create_table_from_entity ,database will show sql type int2 for column state
3. insert a row to table
4. query table rows to Model will show error

Error: Query Error: error occurred while decoding column "state": mismatched types; Rust type `core::option::Option<i8>` (as SQL type `"CHAR"`) is not compatible with SQL type `INT2`

Caused by:
    0: error occurred while decoding column "state": mismatched types; Rust type `core::option::Option<i8>` (as SQL type `"CHAR"`) is not compatible with SQL type `INT2`
    1: error occurred while decoding column "state": mismatched types; Rust type `core::option::Option<i8>` (as SQL type `"CHAR"`) is not compatible with SQL type `INT2`
    2: mismatched types; Rust type `core::option::Option<i8>` (as SQL type `"CHAR"`) is not compatible with SQL type `INT2`
test ctl::param::test_page ... FAILED

Actual Behavior

Reproduces How Often

always

Workarounds

Reproducible Example

Versions

sea-orm v1.1.11

Start with the reported Model definition and the create_table_from_entity entry point, then reproduce the PostgreSQL int2 decoding error from the listed steps. Trace the i8-to-int2 mapping and add a regression test; done means the row can be inserted and queried into the Model without a type mismatch.