refactor(webui): misc fixes in ImageViewer

webui/src/lib/components/display/blobs/ImageViewer.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
 	import type { IEntry } from '@upnd/upend/types';
-
 	import api from '$lib/api';
 	import { useEntity } from '$lib/entity';
 	import IconButton from '../../utils/IconButton.svelte';
@@ -83,8 +82,7 @@
 	let a8sLinkAddress: string;
 
 	async function loaded() {
-		// noinspection TypeScriptCheckImport
-		const { Annotorious } = (await import('@recogito/annotorious')) as any;
+		const { Annotorious } = await import('@recogito/annotorious');
 
 		if (anno) {
 			anno.destroy();
@@ -236,6 +234,8 @@
 		on:keydown={(ev) => {
 			if (ev.key === 'Enter') clicked();
 		}}
+		role="button"
+		tabindex="0"
 	>
 		<img
 			class="preview-image"