UI: fix background for read indicator

Change-Id: I9ea7a4b27d9924bbe1d7485562d38e0e17e29beb
diff --git a/Ring/Ring/Features/Conversations/Conversation/MessageSwiftUI/Views/MessageRowView.swift b/Ring/Ring/Features/Conversations/Conversation/MessageSwiftUI/Views/MessageRowView.swift
index 9847228..5d51024 100644
--- a/Ring/Ring/Features/Conversations/Conversation/MessageSwiftUI/Views/MessageRowView.swift
+++ b/Ring/Ring/Features/Conversations/Conversation/MessageSwiftUI/Views/MessageRowView.swift
@@ -108,12 +108,10 @@
                     if model.showReciveIndicator {
                         Image("message_sent_indicator")
                             .resizable()
-                            .background(Circle().fill(Color.clear))
                             .frame(width: 13, height: 13)
                     } else if model.showSentIndicator {
                         Circle()
                             .strokeBorder(Color.gray, lineWidth: 1)
-                            .background(Circle().fill(Color.white))
                             .frame(width: 12, height: 12)
                     } else {
                         Spacer()
diff --git a/Ring/Ring/Resources/Images.xcassets/message_sent_indicator.imageset/Contents.json b/Ring/Ring/Resources/Images.xcassets/message_sent_indicator.imageset/Contents.json
index 42cfdc4..d0d35e9 100644
--- a/Ring/Ring/Resources/Images.xcassets/message_sent_indicator.imageset/Contents.json
+++ b/Ring/Ring/Resources/Images.xcassets/message_sent_indicator.imageset/Contents.json
@@ -8,5 +8,8 @@
   "info" : {
     "author" : "xcode",
     "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true
   }
 }