Describe the bug
It should forbid extra_fields by default. PyDantic_v2 itself ignores extra_fields per default. So I expect datamodel-code-gen to explicitly set allow_extra_fields=False unless --allow-extra-fields is specified

To Reproduce

Example schema:

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "age": {
      "type": "integer",
      "minimum": 0
    },
    "email": {
      "type": "string",
      "format": "email"
    },
    "address": {
      "type": "object",
      "properties": {
        "street": {
          "type": "string"
        },
        "city": {
          "type": "string"
        },
        "zipcode": {
          "type": "string",
          "pattern": "^[0-9]{5}(?:-[0-9]{4})?$"
        }
      },
      "required": ["street", "city", "zipcode"]
    },
    "phoneNumbers": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^[0-9]{10}$"
      }
    }
  },
  "required": ["name", "age", "email", "address"]
}

Used commandline:

$ datamodel-codegen --input test_json.json --output test_json.py --output-model-type pydantic_v2.BaseModel

Expected behavior
I want the following behavior by default

# generated by datamodel-codegen:
#   filename:  test_json.json
#   timestamp: 2024-05-29T06:01:45+00:00

from __future__ import annotations

from typing import List, Optional

from pydantic import BaseModel, ConfigDict, EmailStr, conint, constr


class Address(BaseModel):
    model_config = ConfigDict(
        extra='forbid',
    )
    street: str
    city: str
    zipcode: constr(pattern=r'^[0-9]{5}(?:-[0-9]{4})?$')


class Model(BaseModel):
    model_config = ConfigDict(
        extra='forbid',
    )
    name: str
    age: conint(ge=0)
    email: EmailStr
    address: Address
    phoneNumbers: Optional[List[constr(pattern=r'^[0-9]{10}$')]] = None

What I got is this:

# generated by datamodel-codegen:
#   filename:  test_json.json
#   timestamp: 2024-05-29T06:01:45+00:00

from __future__ import annotations

from typing import List, Optional

from pydantic import BaseModel, ConfigDict, EmailStr, conint, constr


class Address(BaseModel):
    street: str
    city: str
    zipcode: constr(pattern=r'^[0-9]{5}(?:-[0-9]{4})?$')


class Model(BaseModel):
    name: str
    age: conint(ge=0)
    email: EmailStr
    address: Address
    phoneNumbers: Optional[List[constr(pattern=r'^[0-9]{10}$')]] = None

Version:

• OS: Ubuntu 22.04 LTS
• Python version: 3.10.12
• datamodel-code-generator version: current master

Additional context
Add any other context about the problem here.