Fix: smooth scrolling was inactive after certain drag operations.

Author: Chrriis

flatlaf-core/src/main/java/com/formdev/flatlaf/SmoothScrollingHelper.java

@@ -60,6 +60,21 @@ public void eventDispatched( AWTEvent event ) {
 		if( Animator.useAnimation() && FlatSystemProperties.getBoolean( FlatSystemProperties.SMOOTH_SCROLLING, true ) ) {
 			boolean isHoldingScrollModeBlocked = false;
 			switch(event.getID()) {
+			    case MouseEvent.MOUSE_MOVED:
+			    case MouseEvent.MOUSE_ENTERED:
+			    case MouseEvent.MOUSE_EXITED:
+			        if(isBlitScrollModeBlocked) {
+			            int modifiersEx = ((MouseEvent)event).getModifiersEx();
+			            if((modifiersEx & (MouseEvent.BUTTON1_DOWN_MASK | MouseEvent.BUTTON2_DOWN_MASK | MouseEvent.BUTTON3_DOWN_MASK)) == 0) {
+			                // If the scroll mode was blocked for dragging, let's release if we receive a non-drag-related event (i.e. drag is done).
+			                for( JViewport viewport: viewportSet ) {
+			                    setBlitScrollModeBlocked( viewport, false );
+			                    setInSmoothScrolling( viewport, false );
+			                }
+			                isBlitScrollModeBlocked = false;
+			            }
+			        }
+			        break;
 				case MouseEvent.MOUSE_PRESSED:
 				case MouseEvent.MOUSE_DRAGGED:
 					isHoldingScrollModeBlocked = true;