fix(MultiSelect): Fix reactivity scope for filteredSelectedOptions and filteredUnselectedOptions. Issue #594 (#595)

* fix(MultiSelect): Fix reactivity scope for `filteredSelectedOptions` and `filteredUnselectedOptions`. Issue #594

* React to `options` changes

Author: techniq

.changeset/wise-guests-rush.md

@@ -0,0 +1,5 @@
+---
+'svelte-ux': patch
+---
+
+fix(MultiSelect): Fix reactivity scope for `filteredSelectedOptions` and `filteredUnselectedOptions`. Issue #594

packages/svelte-ux/src/lib/components/MultiSelect.svelte

@@ -109,9 +109,9 @@
   $: search = typeof customSearch === 'boolean' ? defaultSearch : customSearch;
   $: usingSearch = customSearch !== false;
 
-  let filteredOptions: MenuOption<TValue>[] = [...(options ?? [])];
-  let filteredSelectedOptions: MenuOption<TValue>[] = [...(selectedOptions ?? [])];
-  let filteredUnselectedOptions: MenuOption<TValue>[] = [...(unselectedOptions ?? [])];
+  $: filteredOptions = [...(options ?? [])];
+  $: filteredSelectedOptions = [...(selectedOptions ?? [])];
+  $: filteredUnselectedOptions = [...(unselectedOptions ?? [])];
   async function updateFilteredOptions() {
     if (usingSearch) {
       [filteredOptions, filteredSelectedOptions, filteredUnselectedOptions] = await Promise.all([