feat: display formatted email if member has not set display name

apps/web/src/components/LabelIcon.tsx

@@ -0,0 +1,12 @@
+const LabelIcon = ({ colourCode }: { colourCode: string | null }) => (
+  <svg
+    fill={colourCode ?? "#3730a3"}
+    className="h-2 w-2"
+    viewBox="0 0 6 6"
+    aria-hidden="true"
+  >
+    <circle cx={3} cy={3} r={3} />
+  </svg>
+);
+
+export default LabelIcon;