[Bug]Post json string array with pydantic error

[Jenuce]

Environment (please complete the following information):

• OS: any
• Browser any
• Version 23.3.0

Describe the bug
ex:
curl --location --request POST 'http://127.0.0.1:8080/testarray'
--header 'Content-Type: application/json'
--data-raw '[ "dog","cat"]'
the pydantic example:
https://docs.pydantic.dev/latest/usage/models/ Custom Root Types

class Pets(BaseModel):
    __root__: List[str]

class Controller(HTTPMethodView):
     @validate(json=Pets)
    async def post(self, req: request.Request, body: Pets):
        return json({})

Expected behavior
sanic_ext.exceptions.ValidationError: Invalid request body: EncryptVO. Error: ModelMetaclass object argument after ** must be a mapping, not list

Additional context
how to fix:

1. extra/validation/validators.py line 33
   [old]

  def _validate_instance(model, body, allow_coerce):
      data = clean_data(model, body) if allow_coerce else body
      return model(**data)

[new]

 def _validate_instance(model, body, allow_coerce):
     data = clean_data(model, body) if allow_coerce else body
     from sanic_ext.utils.typing import is_pydantic
     if is_pydantic(model) and isinstance(body,list):
          return model.parse_obj(body)
     return model(**data)

2.extensions/openapi/types.py line 301
[old]

              if is_pydantic(value):
                try:
                    value = value.__pydantic_model__
                except AttributeError:
                    ...
                extra = value.schema()["properties"]

[new]

             if is_pydantic(value):
                try:
                    value = value.__pydantic_model__
                except AttributeError:
                    ...
                value_schema = value.schema()
                if "properties" in value_schema:
                    extra = value_schema["properties"]
                else:
                    extra = value_schema

[ahopkins]

Can you add some code formatting so it is easier to read?