[BREAKING] Python: Remove request_type param from ctx.request_info() (#1824)

* Remove request_type param from ctx.request_info()

* Address comments

python/samples/getting_started/workflows/checkpoint/checkpoint_with_human_in_the_loop.py

@@ -125,13 +125,12 @@ class ReviewGateway(Executor):
         await ctx.set_executor_state({"iteration": iteration, "last_draft": draft})
         # Emit a human approval request.
         await ctx.request_info(
-            HumanApprovalRequest(
+            request_data=HumanApprovalRequest(
                 prompt="Review the draft. Reply 'approve' or provide edit instructions.",
                 draft=draft,
                 iteration=iteration,
             ),
-            HumanApprovalRequest,
-            str,
+            response_type=str,
         )
 
     @response_handler

python/samples/getting_started/workflows/checkpoint/sub_workflow_checkpoint.py

@@ -145,7 +145,7 @@ class DraftReviewRouter(Executor):
                 "Confirm CTA is action-oriented",
             ],
         )
-        await ctx.request_info(request, ReviewRequest, str)
+        await ctx.request_info(request_data=request, response_type=str)
 
     @response_handler
     async def forward_decision(
@@ -251,7 +251,7 @@ class LaunchCoordinator(Executor):
         await ctx.set_executor_state(executor_state)
 
         # Send the request without modification
-        await ctx.request_info(review_request, ReviewRequest, str)
+        await ctx.request_info(request_data=review_request, response_type=str)
 
     @response_handler
     async def handle_request_response(