feat(frontend): Do not display blocked instances on the welcome page (#15178)

packages/frontend/src/pages/welcome.entrance.a.vue

@@ -59,6 +59,7 @@ function getInstanceIcon(instance: Misskey.entities.FederationInstance): string
 misskeyApiGet('federation/instances', {
 	sort: '+pubSub',
 	limit: 20,
+	blocked: 'false',
 }).then(_instances => {
 	instances.value = _instances;
 });