🐛 Fix Ender-3 V2 Enhanced SetFlow (#23016)

Marlin/src/lcd/e3v2/enhanced/dwin.cpp

@@ -2343,7 +2343,8 @@ void SetSpeed() { SetPIntOnClick(MIN_PRINT_SPEED, MAX_PRINT_SPEED); }
 
 #endif // ADVANCED_PAUSE_FEATURE
 
-void SetFlow() { SetPIntOnClick(MIN_PRINT_FLOW, MAX_PRINT_FLOW); }
+void ApplyFlow() { planner.refresh_e_factor(0); }
+void SetFlow() { SetPIntOnClick(MIN_PRINT_FLOW, MAX_PRINT_FLOW, ApplyFlow); }
 
 // Leveling Bed Corners
 void LevBed(uint8_t point) {