refactor open group invitation view in SwiftUI

Session/Conversations/Message Cells/Content Views/OpenGroupInvitationView_SwiftUI.swift

@@ -52,10 +52,15 @@ struct OpenGroupInvitationView_SwiftUI: View {
                                 height: Self.iconImageViewSize
                             )
                     )
+                    .frame(
+                        width: Self.iconImageViewSize,
+                        height: Self.iconImageViewSize
+                    )
             }
             
             // Text
             VStack(
+                alignment: .leading, 
                 spacing: 2
             ) {
                 Text(name)
@@ -81,7 +86,7 @@ struct OpenGroupInvitationView_SwiftUI_Previews: PreviewProvider {
     static var previews: some View {
         OpenGroupInvitationView_SwiftUI(
             name: "Session",
-            url: "",
+            url: "http://open.getsession.org/session?public_key=a03c383cf63c3c4efe67acc52112a6dd734b3a946b9545f488aaa93da7991238",
             textColor: .messageBubble_outgoingText,
             isOutgoing: true
         )