fix(ol-source-vector): correctly distinguish between vector / heatmap layer injections

prevent injection warnings

Author: d-koppenhagen

src/components/sources/OlSourceVector.vue

@@ -38,9 +38,16 @@ const props = withDefaults(
   }
 );
 
-const layer =
-  inject<Ref<VectorSource<Geometry>> | null>("vectorLayer") ||
-  inject("heatmapLayer");
+const vectorLayer = inject<Ref<VectorSource<Geometry>> | null>(
+  "vectorLayer",
+  null
+);
+const heatmapLayer = inject<Ref<VectorSource<Geometry>> | null>(
+  "heatmapLayer",
+  null
+);
+const layer = heatmapLayer || vectorLayer;
+
 const { properties } = usePropsAsObjectProperties(props);
 
 const source = computed(