Check quickAction.action is set before trying to display in popover

On a fresh group chat, `props.quickAction` is `[]`, so it enters this
block and then fails to get a translation for
`props.quickAction.action`, which is not set

src/pages/home/sidebar/SidebarScreen/FloatingActionButtonAndPopover.js

@@ -335,7 +335,7 @@ function FloatingActionButtonAndPopover(props) {
                               },
                           ]
                         : []),
-                    ...(props.quickAction
+                    ...(props.quickAction && props.quickAction.action
                         ? [
                               {
                                   icon: getQuickActionIcon(props.quickAction.action),