Don't directly reference local state

In svelte 5, $state referenced locally is not reactive, because of how evaluation occurs.

Svelte will warn about this at runtime (and does so here)
To make it reactive locally, the docs recommend using a closure, which is what we do here.

packages/svelte-table/src/createTable.svelte.ts

@@ -20,12 +20,13 @@ export function createTable<
   let state = $state<Partial<TableState<TFeatures>>>(
     getInitialTableState(_features, tableOptions.initialState),
   )
-
+  const getState = () => state
+
   const statefulOptions: TableOptions<TFeatures, TData> = mergeObjects(
     tableOptions,
     {
       _features,
-      state: { ...state, ...tableOptions.state },
+      state: { ...getState(), ...tableOptions.state },
       mergeOptions: (
         defaultOptions: TableOptions<TFeatures, TData>,
         newOptions: Partial<TableOptions<TFeatures, TData>>,