Bug 1764138 - Only show conversation icon for a user tooltip if it is a direct conversation with them. r=aleca

Differential Revision: https://phabricator.services.mozilla.com/D143393

--HG--
extra : amend_source : 50afbd615338d3738f053f81d59d090caa2b1461

chat/content/chat-tooltip.js

@@ -421,7 +421,7 @@
       if (overrideAvatar) {
         this.setUserIcon(overrideAvatar, true);
         this.hasBestAvatar = true;
-      } else if (aConv) {
+      } else if (aConv && !aConv.isChat) {
         this.setUserIcon(aConv.convIconFilename, true);
         this.hasBestAvatar = true;
       } else {