UI : fix bi-colour message telling there was a call

setting message opacity to 1 to only have the messageInBgColor

Gitlab: #1799

Change-Id: I37d0a354412ec8f2e7127203a2d0adf185674cea

src/app/commoncomponents/CallMessageDelegate.qml

@@ -51,7 +51,7 @@ SBSMessageBase {
     bubble.border.color: CurrentConversation.color
     bubble.border.width: root.isActive ? 1.5 : 0
     bubble.color: JamiTheme.messageInBgColor
-    bubble.opacity: 0.6
+    bubble.opacity: 1
 
     Connections {
         target: CurrentConversation