Fix a case that sender avatar is not displayed.

imports/Spectral/Component/Timeline/MessageDelegate.qml

@@ -262,17 +262,15 @@ ColumnLayout {
         Layout.rightMargin: sentByMe ? 12 : undefined
         Layout.bottomMargin: 4
 
-        visible: showTimestamp || (showAuthor && !sentByMe)
+        visible: showAuthor
 
         Label {
-            visible: showTimestamp
-
             text: Qt.formatDateTime(time, "hh:mm")
             color: MPalette.lighter
         }
 
         Label {
-            visible: showAuthor && !sentByMe
+            visible: !sentByMe
 
             text: author.displayName
             color: MPalette.lighter

imports/Spectral/Panel/RoomPanel.qml

@@ -192,6 +192,15 @@ Item {
                         }
                     }
 
+                    DelegateChoice {
+                        roleValue: "sticker"
+                        delegate: ImageDelegate {
+                            anchors.right: sentByMe ? parent.right : undefined
+
+                            Layout.maximumWidth: parent.width
+                        }
+                    }
+
                     DelegateChoice {
                         roleValue: "file"
                         delegate: FileDelegate {