Fix chat effect particles sometimes getting 'stuck' on screen

resources/qml/TimelineView.qml

@@ -381,7 +381,10 @@ Item {
         repeat: false
         running: false
 
-        onTriggered: shouldEffectsRun = false
+        onTriggered: {
+            timelineEffects.removeParticles()
+            shouldEffectsRun = false
+        }
     }
     Connections {
         function onConfetti() {

resources/qml/ui/TimelineEffects.qml

@@ -21,6 +21,11 @@ Item {
         rainfallEmitter.pulse(effectRoot.height * 3.3)
     }
 
+    function removeParticles()
+    {
+        particleSystem.reset()
+    }
+
     ParticleSystem {
         id: particleSystem