Fix: Icon - movetowindow property

There is a bug where the icon does not appear in `#appMenu-library-recentlyClosedTabs` if `width` & `height` is not specified.

icons/movetowindow-16.svg

@@ -1,7 +1,7 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg data-name="icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
-  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M15.85 12.15l-3-3a0.49 0.49 0 0 0-0.7 0.7L14.29 12H9.5a0.5 0.5 0 0 0 0 1h4.79l-2.14 2.15a0.48 0.48 0 0 0 0 0.7 0.48 0.48 0 0 0 0.7 0l3-3a0.36 0.36 0 0 0 0.11-0.16 0.5 0.5 0 0 0 0-0.38 0.36 0.36 0 0 0-0.11-0.16z"/>
-  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M13 1H3a3 3 0 0 0-3 3v8a3 3 0 0 0 3 3h4a1 1 0 0 0 0-2H3a1 1 0 0 1-1-1V6h12v2a1 1 0 0 0 2 0V4a3 3 0 0 0-3-3zM2 5V4a1 1 0 0 1 1-1h10a1 1 0 0 1 1 1v1z"/>
+<svg data-name="icon" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" fill="context-fill" fill-opacity="context-fill-opacity">
+  <path d="M15.85 12.15l-3-3a0.49 0.49 0 0 0-0.7 0.7L14.29 12H9.5a0.5 0.5 0 0 0 0 1h4.79l-2.14 2.15a0.48 0.48 0 0 0 0 0.7 0.48 0.48 0 0 0 0.7 0l3-3a0.36 0.36 0 0 0 0.11-0.16 0.5 0.5 0 0 0 0-0.38 0.36 0.36 0 0 0-0.11-0.16z"/>
+  <path d="M13 1H3a3 3 0 0 0-3 3v8a3 3 0 0 0 3 3h4a1 1 0 0 0 0-2H3a1 1 0 0 1-1-1V6h12v2a1 1 0 0 0 2 0V4a3 3 0 0 0-3-3zM2 5V4a1 1 0 0 1 1-1h10a1 1 0 0 1 1 1v1z"/>
 </svg>