text: Title: PydanticSerializationError missing validation error field name
  Body: I am getting quite a few of these  `Expected 'int' but got 'float' - serialized value may not be as expected` warnings in the log files. Is there a way to callout the specific field name?
  
  I looked at Rust's exception and error message, and I don't see any "add_variable_context" flag.
  
  If not easily possible, would it be possible to add the field name that is triggering the warning to PydanticSerializationError please.
  
  The object that is triggering the exception has large number of sub-objects and fields, so going through all the fields would be very time consuming.
  
  ```python
  # Internal imports
  
  # External imports
  from pydantic import BaseModel
  from pydantic_core import PydanticSerializationError
  
  
  # Own imports
  
  class TestModelDump(BaseModel):
      int_value: int | None = None
      float_value: float | None = None
  
  
  def test_mismatch():
      valu = TestModelDump(int_value=1, float_value=1.0)
      result = valu.model_dump_json()
      print(result)
  
      valu = TestModelDump(int_value=1.0, float_value=1.0)
      result = valu.model_dump_json(warnings="error")
      print(result)
  
      valu = TestModelDump(int_value=1.0, float_value=1)
      valu.int_value = 1.0
      valu.float_value = 1
      try:
          result = valu.model_dump_json(warnings="error")
      except PydanticSerializationError as e:
          print(e)
      else:
          print(result)
  ```