refactor: make Sticker a Loader so that we only load it if needed

ui/app/AppLayouts/Chat/ChatColumn/MessageComponents/Sticker.qml

@@ -2,10 +2,18 @@ import QtQuick 2.3
 import "../../../../../shared" as Shared
 import "../../../../../imports"
 
-Shared.ImageLoader {
-    id: stickerId
-    visible: contentType === Constants.stickerType
-    width: 140
-    height: this.visible ? 140 : 0
-    source: this.visible ? ("https://ipfs.infura.io/ipfs/" + sticker) : ""
+Loader {
+    property color color
+
+    id: root
+    active: contentType === Constants.stickerType
+
+    sourceComponent: Component {
+        Shared.ImageLoader {
+            color: root.color
+            width: 140
+            height: this.visible ? 140 : 0
+            source: this.visible ? ("https://ipfs.infura.io/ipfs/" + sticker) : ""
+        }
+    }
 }