Add TypeVar default for FlowResult (#112345)

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>

homeassistant/helpers/data_entry_flow.py

@@ -2,9 +2,10 @@
 from __future__ import annotations
 
 from http import HTTPStatus
-from typing import Any
+from typing import Any, Generic
 
 from aiohttp import web
+from typing_extensions import TypeVar
 import voluptuous as vol
 import voluptuous_serialize
 
@@ -14,11 +15,17 @@ from homeassistant.components.http.data_validator import RequestDataValidator
 
 from . import config_validation as cv
 
+_FlowManagerT = TypeVar(
+    "_FlowManagerT",
+    bound=data_entry_flow.FlowManager[Any],
+    default=data_entry_flow.FlowManager,
+)
 
-class _BaseFlowManagerView(HomeAssistantView):
+
+class _BaseFlowManagerView(HomeAssistantView, Generic[_FlowManagerT]):
     """Foundation for flow manager views."""
 
-    def __init__(self, flow_mgr: data_entry_flow.BaseFlowManager) -> None:
+    def __init__(self, flow_mgr: _FlowManagerT) -> None:
         """Initialize the flow manager index view."""
         self._flow_mgr = flow_mgr
 
@@ -48,7 +55,7 @@ class _BaseFlowManagerView(HomeAssistantView):
         return data
 
 
-class FlowManagerIndexView(_BaseFlowManagerView):
+class FlowManagerIndexView(_BaseFlowManagerView[_FlowManagerT]):
     """View to create config flows."""
 
     @RequestDataValidator(
@@ -96,7 +103,7 @@ class FlowManagerIndexView(_BaseFlowManagerView):
         return {"show_advanced_options": data["show_advanced_options"]}
 
 
-class FlowManagerResourceView(_BaseFlowManagerView):
+class FlowManagerResourceView(_BaseFlowManagerView[_FlowManagerT]):
     """View to interact with the flow manager."""
 
     async def get(self, request: web.Request, /, flow_id: str) -> web.Response: