Fix the raft printing speed.

src/fffProcessor.h

@@ -370,8 +370,8 @@ private:
             sendPolygonsToGui("support", 0, config.raftBaseThickness + config.raftInterfaceThickness, storage.raftOutline);
 
             GCodePathConfig raftBaseConfig((config.raftBaseSpeed <= 0) ? config.initialLayerSpeed : config.raftBaseSpeed, config.raftBaseLinewidth, "SUPPORT");
-            GCodePathConfig raftMiddleConfig(config.printSpeed, config.raftInterfaceLinewidth, "SUPPORT");
-            GCodePathConfig raftInterfaceConfig(config.printSpeed, config.raftInterfaceLinewidth, "SUPPORT");
+            GCodePathConfig raftMiddleConfig((config.raftBaseSpeed <= 0) ? config.initialLayerSpeed : config.raftBaseSpeed, config.raftInterfaceLinewidth, "SUPPORT");
+            GCodePathConfig raftInterfaceConfig((config.raftBaseSpeed <= 0) ? config.initialLayerSpeed : config.raftBaseSpeed, config.raftInterfaceLinewidth, "SUPPORT");
             GCodePathConfig raftSurfaceConfig((config.raftSurfaceSpeed > 0) ? config.raftSurfaceSpeed : config.printSpeed, config.raftSurfaceLinewidth, "SUPPORT");
 
             {