fix small bug where database was not shown on refresh

packages/builder/src/pages/[application]/backend/database/_layout.svelte

@@ -1,3 +1,25 @@
+<script>
+  import { store, backendUiStore } from "builderStore"
+  import { goto } from "@sveltech/routify"
+  import { onMount } from "svelte"
+
+  $: instances = $store.appInstances
+  $: views = $store.hierarchy.indexes
+
+  async function selectDatabase(database) {
+    backendUiStore.actions.records.select(null)
+    backendUiStore.actions.views.select(views[0])
+    backendUiStore.actions.database.select(database)
+  }
+
+  onMount(async () => {
+    if ($store.appInstances.length > 0) {
+      await selectDatabase($store.appInstances[0])
+      $goto(`./${$backendUiStore.selectedDatabase.id}`)
+    }
+  })
+</script>
+
 <div class="root">
   <div class="node-view">
     <slot />