Rename 'DayPnL%' to 'TotalPnL%'

Why rename? There is already a value called 'DailyPnL' but its value is
unrelated to how we construct 'DayPnL%' so it looked confusing.

'TotalPnL%' is just the current (realized + unrealized) percentages
gains added together (which changes every day as IBKR removes old
execution profit results since the IBKR API only returns one or two days
of trade history before being lost forever).

icli/cli.py

@@ -1802,7 +1802,7 @@ def updateSummary(self, v):
 
                         # Also combine realized+unrealized to show the current daily total PnL percentage because
                         # maybe we have 12% realized profit but -12% unrealized and we're actually flat...
-                        update["DayPnL%"] = (
+                        update["TotalPnL%"] = (
                             update["RealizedPnL%"] + update["UnrealizedPnL%"]
                         )
                     case _: