fix: resolve a11y warnings from Svelte version 3.58 (#1732)

* chore(deps-dev): upgrade svelte to 3.58

* chore(a11y): ignore false positives

Referencing the upstream Carbon React implementation, these warnings can be ignored.

* fix(list-box-menu-item): set `tabindex` to `-1`

* chore: fix `tabindex` capitalization

The Svelte Language server does not detect `tabIndex` as a valid attribute.

Note, however, that `tabIndex` is correct when using it in JavaScript (e.g., `node.tabIndex`).

src/ContentSwitcher/ContentSwitcher.svelte

@@ -58,6 +58,7 @@
 </script>
 
 <!-- svelte-ignore a11y-mouse-events-have-key-events -->
+<!-- svelte-ignore a11y-interactive-supports-focus -->
 <div
   role="tablist"
   class:bx--content-switcher="{true}"

src/ListBox/ListBoxMenuItem.svelte

@@ -20,6 +20,7 @@
 
 <div
   role="option"
+  tabindex="-1"
   class:bx--list-box__menu-item="{true}"
   class:bx--list-box__menu-item--active="{active}"
   class:bx--list-box__menu-item--highlighted="{highlighted || active}"

src/ListBox/ListBoxSelection.svelte

@@ -62,7 +62,7 @@
     <div
       bind:this="{ref}"
       role="button"
-      tabIndex="{disabled ? -1 : 0}"
+      tabindex="{disabled ? -1 : 0}"
       class:bx--tag__close-icon="{true}"
       on:click|preventDefault|stopPropagation="{(e) => {
         if (!disabled) {

src/StructuredList/StructuredListRow.svelte

@@ -27,6 +27,7 @@
     <slot />
   </label>
 {:else}
+  <!-- svelte-ignore a11y-interactive-supports-focus -->
   <div
     role="row"
     class:bx--structured-list-row="{true}"

src/Tooltip/Tooltip.svelte

@@ -254,7 +254,7 @@
         on:click|stopPropagation
         on:mousedown|stopPropagation
         class:bx--tooltip__content="{true}"
-        tabIndex="-1"
+        tabindex="-1"
         role="dialog"
       >
         <slot />