Load datasets from the selection action

src/components/Navigation/DatasetFromSelectionModal.vue

@@ -140,14 +140,15 @@ export default defineComponent({
     set: null as string | null
   }),
   computed: {
-    ...mapState(useDatasetStore, ['singleCorpusDatasets']),
+    ...mapState(useDatasetStore, ['corpusDatasets', 'singleCorpusDatasets']),
     title (): string {
       return `Add ${this.corpus?.name} selection to a dataset`
     },
     canAdd (): boolean {
       return this.selectedDataset !== null && this.set !== null
     },
-    availableDatasets (): Dataset[] {
+    availableDatasets (): Dataset[] | null {
+      if (this.corpusDatasets[this.corpusId] === undefined) return null
       return this.singleCorpusDatasets(this.corpusId)
     }
   },