[BUG] Incorrect openapi schema when using serialization_alias

[enadeau]

Describe the bug
When using serialization_alias on Field the alias is correctly used in the response (with the by_alias flag) but not used for the openapi schema.

Here is a short example:

class MySchema(ninja.Schema):
    foo: str = ninja.Field(..., alias="alias1")
    bar: str = ninja.Field(..., serialization_alias="alias2")


@router.get("foo", response=MySchema, by_alias=True)
def foo(request) -> MySchema:
    return {
        "alias1": "lalala",
        "bar": "bububub",
    }

Here we see that the response contains the alias1 and alias2 field while the schema contains the says that the fields are alias 1 and bar

Versions (please complete the following information):

• Python version: 3.9.17
• Django version: 3.2.25
• Django-Ninja version: 1.3.0
• Pydantic version: 2.9.2