Turn @config into a dataclass_transform (#31541)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/config/compilation.py

@@ -8,8 +8,7 @@ from dataclasses import field
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, ClassVar, Literal
 
-from pydantic import ConfigDict, Field, TypeAdapter, field_validator
-from pydantic.dataclasses import dataclass
+from pydantic import Field, TypeAdapter, field_validator
 
 import vllm.envs as envs
 from vllm.compilation.inductor_pass import CallableInductorPass, InductorPass
@@ -96,7 +95,6 @@ class CUDAGraphMode(enum.Enum):
 
 
 @config
-@dataclass(config=ConfigDict(extra="forbid"))
 class PassConfig:
     """Configuration for custom Inductor passes.
 
@@ -267,7 +265,6 @@ class DynamicShapesType(str, enum.Enum):
 
 
 @config
-@dataclass(config=ConfigDict(extra="forbid"))
 class DynamicShapesConfig:
     """Configuration to control/debug torch compile dynamic shapes."""
 
@@ -311,7 +308,6 @@ class DynamicShapesConfig:
 
 
 @config
-@dataclass(config=ConfigDict(extra="forbid"))
 class CompilationConfig:
     """Configuration for compilation.