fix: turns out, svelte still doesn't report exported module members in typescript

Author: hperrin

packages/common/src/classadder/classAdderBuilder.ts

@@ -2,6 +2,7 @@ import type { ComponentType, SvelteComponent } from 'svelte';
 
 import type { SmuiElementMap } from '../smui.types.js';
 import type { ClassAdderInternals } from './ClassAdder.types.js';
+// @ts-ignore: Internals is exported... argh.
 import ClassAdder, { internals } from './ClassAdder.svelte';
 
 const defaults = { ...internals };