Bugfix/marketplace add (#1805)

* remove falsey check when getting marketplaces, as no alts could exist

* filter boolean but start with object

Co-authored-by: Matt Hill <matthewonthemoon@gmail.com>

frontend/projects/ui/src/app/util/get-marketplace.ts

@@ -3,10 +3,18 @@ import {
   DataModel,
   UIMarketplaceData,
 } from 'src/app/services/patch-db/data-model'
-import { filter, firstValueFrom } from 'rxjs'
+import { filter, firstValueFrom, startWith } from 'rxjs'
 
 export function getMarketplace(
   patch: PatchDB<DataModel>,
 ): Promise<UIMarketplaceData> {
-  return firstValueFrom(patch.watch$('ui', 'marketplace').pipe(filter(Boolean)))
+  return firstValueFrom(
+    patch.watch$('ui', 'marketplace').pipe(
+      filter(Boolean),
+      startWith({
+        'selected-id': null,
+        'known-hosts': {},
+      }),
+    ),
+  )
 }