fix pause flow input

maintenance_flow.py

@@ -18,21 +18,15 @@ def request_wells_maintenance(maintenance_type):
         message += f"\n\nOT2-LCM requests a {maintenance_type}, please open the <{flow_run_url}|paused flow run>, complete with your user name and then click 'Resume'" 
     slack_block.notify(message)
     
-    user_input = pause_flow_run(
-        wait_for_input={
-            "confirmation": f"I have finished {maintenance_type}",
-            "operator": "Enter your name:"
-        },
-        timeout=600
-    )
-
-    set_maintenance_status(maintenance_type, 0)
+    user = pause_flow_run(wait_for_input=str, timeout=600)
+    
+    set_maintenance_status(maintenance_type,0)
 
     if maintenance_type == "wellplate_maintenance":
         generate_empty_well()
-        msg_out = f"Updating wells status on DB by {user_input['operator']}"
+        msg_out = f"Updating wells status on DB by {user}"
         logger.info(msg_out)
-
-    insert_maintenance_log(maintenance_type, user_input["operator"])
+    
+    insert_maintenance_log(maintenance_type, user)
 
     return msg_out