Add type hints to transmission (#99117)

* Add type hints

* Apply suggestions

homeassistant/components/transmission/config_flow.py

@@ -57,7 +57,9 @@ class TransmissionFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         """Get the options flow for this handler."""
         return TransmissionOptionsFlowHandler(config_entry)
 
-    async def async_step_user(self, user_input=None):
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Handle a flow initialized by the user."""
         errors = {}
 
@@ -141,7 +143,9 @@ class TransmissionOptionsFlowHandler(config_entries.OptionsFlow):
         """Initialize Transmission options flow."""
         self.config_entry = config_entry
 
-    async def async_step_init(self, user_input=None):
+    async def async_step_init(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Manage the Transmission options."""
         if user_input is not None:
             return self.async_create_entry(title="", data=user_input)