TableHead.svelte <thead> cannot contain <th>

### Describe the bug node_invalid_placement_ssr: `<thead>` (node_modules/.pnpm/svelte-5-ui-lib@0.11.0_svelte@5.2.7_tailwindcss@3.4.15/node_modules/svelte-5-ui-lib/dist/table/TableHead.svelte:23:0) cannot contain `<th>` (node_modules/.pnpm/svelte-5-ui-lib@0.11.0_svelte@5.2.7_tailwindcss@3.4.15/node_modules/svelte-5-ui-lib/dist/table/TableHeadCell.svelte:8:0) This can cause content to shift around as the browser repairs the HTML, and will likely result in a `hydration_mismatch` warning. ### Reproduction n/a ### Version and System Info ```shell n/a ```