Use `Icon` in `AnnotationShareControl`

src/sidebar/components/Annotation/AnnotationShareControl.js

 import {
+  Icon,
   IconButton,
-  SvgIcon,
   TextInput,
   TextInputWithButton,
   useElementShouldClose,
@@ -168,11 +168,7 @@ function AnnotationShareControl({
             )}
             {showShareLinks && <ShareLinks shareURI={shareUri} />}
           </div>
-          <SvgIcon
-            name="pointer"
-            inline={true}
-            className="annotation-share-panel__arrow"
-          />
+          <Icon name="pointer" classes="annotation-share-panel__arrow" />
         </div>
       )}
     </div>

src/styles/sidebar/components/AnnotationShareControl.scss

@@ -47,9 +47,10 @@
   // Position the pointer icon absolutely and flip it to make it point at the
   // share icon
   &__arrow {
+    display: inline;
     @include molecules.menu-arrow($direction: 'down');
     right: 0px;
-    bottom: -8px;
+    bottom: -12px;
   }
 
   .ShareLinks__icon {