Make v10 Tabs work with v11 css classes

In v11 [Tabs](https://carbondesignsystem.com/migrating/guide/design/#tabs-breaking) received some additional modifiers. In this commit we only want to make sure that the Svelte v10 tabs still work using v11 styles. This probably needs additional testing.

types/Tabs/Tab.svelte.d.ts

@@ -2,7 +2,7 @@
 import type { SvelteComponentTyped } from "svelte";
 
 export interface TabProps
-  extends svelte.JSX.HTMLAttributes<HTMLElementTagNameMap["li"]> {
+  extends svelte.JSX.HTMLAttributes<HTMLElementTagNameMap["a"]> {
   /**
    * Specify the tab label
    * Alternatively, use the default slot (e.g., <Tab><span>Label</span></Tab>)
@@ -39,6 +39,30 @@ export interface TabProps
    * @default null
    */
   ref?: null | HTMLAnchorElement;
+
+  /**
+   * SvelteKit attribute to enable data prefetching
+   * if a link is hovered over or touched on mobile.
+   * @see https://kit.svelte.dev/docs/a-options#sveltekit-prefetch
+   * @default false
+   */
+  "sveltekit:prefetch"?: boolean;
+
+  /**
+   * SvelteKit attribute to trigger a full page
+   * reload after the link is clicked.
+   * @see https://kit.svelte.dev/docs/a-options#sveltekit-reload
+   * @default false
+   */
+  "sveltekit:reload"?: boolean;
+
+  /**
+   * SvelteKit attribute to prevent scrolling
+   * after the link is clicked.
+   * @see https://kit.svelte.dev/docs/a-options#sveltekit-noscroll
+   * @default false
+   */
+  "sveltekit:noscroll"?: boolean;
 }
 
 export default class Tab extends SvelteComponentTyped<