fix: allow numbers as item ids for ComboBox, Dropdown, MultiSelect

src/ComboBox/ComboBox.svelte

@@ -285,7 +285,7 @@
     </ListBoxField>
     {#if open}
       <ListBoxMenu aria-label="{ariaLabel}" id="{id}">
-        {#each filteredItems as item, i (item.id || i)}
+        {#each filteredItems as item, i (item.id)}
           <ListBoxMenuItem
             id="{item.id}"
             active="{selectedIndex === i || selectedId === item.id}"

src/Dropdown/Dropdown.svelte

@@ -235,7 +235,7 @@
     </button>
     {#if open}
       <ListBoxMenu aria-labelledby="{id}" id="{id}">
-        {#each items as item, i (item.id || i)}
+        {#each items as item, i (item.id)}
           <ListBoxMenuItem
             id="{item.id}"
             active="{selectedIndex === i || selectedId === item.id}"

src/MultiSelect/MultiSelect.svelte

@@ -420,7 +420,7 @@
     </ListBoxField>
     {#if open}
       <ListBoxMenu aria-label="{ariaLabel}" id="{id}">
-        {#each filterable ? filteredItems : sortedItems as item, i (item.id || i)}
+        {#each filterable ? filteredItems : sortedItems as item, i (item.id)}
           <ListBoxMenuItem
             id="{item.id}"
             active="{item.checked}"