Broadcast last used namespace (#1253)

* Broadcast lastUsedNamespace

* Remove version tag

Author: Alex-Tideman

Diff for: src/lib/stores/namespaces.ts

@@ -2,6 +2,6 @@ import type { DescribeNamespaceResponse } from '$types';
 import { writable } from 'svelte/store';
 import { persistStore } from './persist-store';
 
-export const lastUsedNamespace = persistStore('lastNamespace', 'default');
+export const lastUsedNamespace = persistStore('lastNamespace', 'default', true);
 
 export const namespaces = writable<DescribeNamespaceResponse[]>([]);