Don't show user avatar in snapshot tests (#2130)

* Make user avatar 404 in snapshot tests

* Make fallback menu button look better

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* Give AppHeader consistent height

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* Rerun CI

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* Rerun CI

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/components/CustomIcon.tsx

@@ -219,6 +219,16 @@ const CustomIconMap = {
       />
     </svg>
   ),
+  menu: (
+    <svg viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <path
+        fillRule="evenodd"
+        clipRule="evenodd"
+        d="M15 6H5V5H15V6ZM15 10.5H5V9.5H15V10.5ZM5 15H15V14H5V15Z"
+        fill="currentColor"
+      />
+    </svg>
+  ),
   move: (
     <svg viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
       <path