`_untracked` writes on Store fields notify some store fields

[gbj]

1. Update the stores example to do an untracked write when adding a todo:

diff --git a/examples/stores/src/lib.rs b/examples/stores/src/lib.rs
index b13aae37e..eb599c643 100644
--- a/examples/stores/src/lib.rs
+++ b/examples/stores/src/lib.rs
@@ -98,7 +98,7 @@ pub fn App() -> impl IntoView {
         <hr/>
         <form on:submit=move |ev| {
             ev.prevent_default();
-            store.todos().write().push(Todo::new(input_ref.get().unwrap().value()));
+            store.todos().write_untracked().push(Todo::new(input_ref.get().unwrap().value()));
         }>
             <label>"Add a Todo" <input type="text" node_ref=input_ref/></label>
             <input type="submit"/>

2. Add a new todo
3. The list in the DOM updates, but the stringified version in the <pre> tag does not

[mahdi739]

Based on my repo, it happened after PR #3403. I suspect it's caused by this line (based on the latest commit)