paper: always sync pps.toml state on startup

piker/clearing/_paper_engine.py

@@ -473,6 +473,7 @@ async def handle_order_requests(
                     BrokerdOrderAck(
                         oid=order.oid,
                         reqid=reqid,
+                        account='paper'
                     )
                 )
 
@@ -564,6 +565,10 @@ async def trades_dialogue(
             ['paper'],
         ))
 
+        # write new positions state in case ledger was
+        # newer then that tracked in pps.toml
+        ppt.write_config()
+
         # exit early since no fqme was passed,
         # normally this case is just to load
         # positions "offline".