.isDirty is true after submitting and reloading InertiaJS page

I have a simple form with a "Save" button that shows up if the user has updated any of the checkboxes.

The form sends a POST request to a store route in a controller that creates new records in the databases and redirects them to the index route.

When the page reloads, it doesn't seem to reset the Inertia form isDirty state from true to false even when I manually refresh the page.

public function index(Request $request)
{
    $restaurantCategories = auth()->user()
        ->currentTeam->categories()
        ->with('category')->get();
    $allCategories = Category::all();
    $filters = $request->only('search');

    return Inertia::render('Restaurant/Categories/Index',
        [
            'restaurantCategories' => $restaurantCategories,
            'allCategories' => $allCategories, 'filters' => $filters
        ]);
}

public function store(Request $request)
{
    foreach (auth()->user()->currentTeam->categories as $category) {
        $category->delete();
    }

    foreach ($request->checkedCategories as $category) {
        auth()->user()->currentTeam->categories()
            ->create(['category_id' => $category['id']]);
    }
    
    return redirect()->route('restaurant.categories.index');
}

Vue

export default{
props: {
        filters: Object,
        restaurantCategories: Object,
        allCategories: Object,
    },
data: {
       updateForm: this.$inertia.form({
           checkedCategories: this.restaurantCategories.map(
               (resCat) => resCat.category
           ),
       }),
    }
}
methods:{    
    //THIS METHOD IS CALLED WHEN THE SAVE BUTTON IS CLICKED
    sendUpdate() {
            this.$inertia.post(
                this.route("restaurant.categories.store"),
                this.updateForm
            );
        },
    },
}

I've tried setting a key to the save button and updating the key on sendUpdate method, and calling Inertia.reload()