[Enhancement] disable layer column selection if empty (#1888)

* [Enhancement] disable layer column selection if empty (#275)

Signed-off-by: Shan He <heshan0131@gmail.com>
Signed-off-by: Ihor Dykhta <dikhta.igor@gmail.com>

* prettier

Signed-off-by: Ihor Dykhta <dikhta.igor@gmail.com>

Co-authored-by: Shan He <heshan0131@gmail.com>

src/components/side-panel/layer-panel/layer-column-config.tsx

@@ -79,6 +79,11 @@ function LayerColumnConfigFactory(ColumnSelector: ReturnType<typeof ColumnSelect
       [updateLayerConfig, columnPairs, assignColumnPairs, assignColumn]
     );
 
+    if (!Object.keys(columns).length) {
+      // don't render if columns is empty
+      return <div />;
+    }
+
     return (
       <div>
         <SidePanelSection>