[Doc] Add engine args back in to the docs (#20674)

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

vllm/inputs/registry.py

@@ -13,7 +13,6 @@ from typing_extensions import TypeVar
 from vllm.jsontree import JSONTree, json_map_leaves
 from vllm.logger import init_logger
 from vllm.transformers_utils.processor import cached_processor_from_config
-from vllm.transformers_utils.tokenizer import AnyTokenizer
 from vllm.utils import resolve_mm_processor_kwargs
 
 if TYPE_CHECKING:
@@ -21,6 +20,14 @@ if TYPE_CHECKING:
     from vllm.multimodal import (MultiModalDataDict, MultiModalPlaceholderDict,
                                  MultiModalRegistry)
     from vllm.sequence import SequenceData
+    from vllm.transformers_utils.tokenizer import AnyTokenizer
+else:
+    ModelConfig = Any
+    MultiModalDataDict = Any
+    MultiModalPlaceholderDict = Any
+    MultiModalRegistry = Any
+    SequenceData = Any
+    AnyTokenizer = Any
 
 _T = TypeVar("_T")
 _C = TypeVar("_C", bound=PretrainedConfig, default=PretrainedConfig)
@@ -36,7 +43,7 @@ class InputContext:
     modify the inputs.
     """
 
-    model_config: "ModelConfig"
+    model_config: ModelConfig
     """The configuration of the model."""
 
     def get_hf_config(
@@ -200,9 +207,9 @@ class DummyData(NamedTuple):
     Note: This is only used in V0.
     """
 
-    seq_data: "SequenceData"
-    multi_modal_data: Optional["MultiModalDataDict"] = None
-    multi_modal_placeholders: Optional["MultiModalPlaceholderDict"] = None
+    seq_data: SequenceData
+    multi_modal_data: Optional[MultiModalDataDict] = None
+    multi_modal_placeholders: Optional[MultiModalPlaceholderDict] = None
 
 
 class InputRegistry:
@@ -212,9 +219,9 @@ class InputRegistry:
 
     def dummy_data_for_profiling(
         self,
-        model_config: "ModelConfig",
+        model_config: ModelConfig,
         seq_len: int,
-        mm_registry: "MultiModalRegistry",
+        mm_registry: MultiModalRegistry,
         is_encoder_data: bool = False,
     ) -> DummyData:
         """