Fix Edit button layout

Summary: Edit button was not visible which blocked editing of databases

Reviewed By: passy

Differential Revision: D29139000

fbshipit-source-id: d0e8d22ca1a1a39697ec70e94e3eb7422e32de48

desktop/plugins/public/databases/DatabaseDetailSidebar.tsx

@@ -186,7 +186,7 @@ export default React.memo(function DatabaseDetailSidebar(
     <DetailSidebar>
       <Panel title="Row details" collapsible>
         {onSave ? (
-          <Layout.Right>
+          <Layout.Right center>
             <div />
             {editing ? (
               <Layout.Horizontal pad gap>