fix: hide unavailable GeoServer layers

src/features/workbench/map/map-control-config.test.ts

@@ -34,6 +34,25 @@ describe("workbench supply layer controls", () => {
     ]);
   });
 
+  it("omits data-dependent controls when their GeoServer layers are empty", () => {
+    const items = createLayerControlItems(INITIAL_LAYER_VISIBILITY, [
+      "pipes",
+      "junctions",
+      "valves",
+      "reservoirs",
+      "scada"
+    ]);
+
+    expect(items.map((item) => item.id)).toEqual([
+      "pipes",
+      "junctions",
+      "valves",
+      "reservoirs",
+      "scada",
+      "simulation"
+    ]);
+  });
+
   it("shows only current visible business icons in the legend", () => {
     expect(MAP_LEGEND_ITEMS.map((item) => item.id)).toEqual([
       "major-pipe",