text: Title: max_digits and decimal_places do not serialize to json_schema for decimal
  Body: ### Initial Checks
  
  - [X] I confirm that I'm using Pydantic V2
  
  ### Description
  
  Not sure if this is expected or not, but my decimal constraints do not appear to make it to the Jsonschema:
  
  ### Example Code
  
  ```Python
  from pydantic import TypeAdapter, Field
  from typing import Annotated
  from decimal import Decimal
  constraints = {'max_digits': 5, 'decimal_places': 2, 'ge': 0.0, 'le': 10.0}
  
  TypeAdapter(Annotated[Decimal, Field(**constraints)]).json_schema()
  # Out[53]: {'anyOf': [{'maximum': 10.0, 'minimum': 0.0, 'type': 'number'},  {'type': 'string'}]}
  ```
  
  
  ### Python, Pydantic & OS Version
  
  ```Text
  pydantic version: 2.9.2
          pydantic-core version: 2.23.4
            pydantic-core build: profile=release pgo=false
                   install path: /home/mheiser/src/taxa-backend/.venv/lib/python3.12/site-packages/pydantic
                 python version: 3.12.7 (main, Oct  8 2024, 00:20:25) [Clang 18.1.8 ]
                       platform: Linux-5.15.167.4-microsoft-standard-WSL2-x86_64-with-glibc2.35
               related packages: fastapi-0.115.4 typing_extensions-4.12.2 pydantic-settings-2.6.1 pyright-1.1.385
                         commit: unknown
  ```
  