chore(cleanup): no permissions prop and no inherited attrs

Viewer hands a lot of props to the component.

We need to pick the ones we actually need and set

`inheritAttrs` to false

so the others are not added to the dom.

Signed-off-by: Max <max@nextcloud.com>

[skip ci]

Author: max-nextcloud

src/components/ViewerComponent.vue

@@ -56,6 +56,7 @@ export default defineComponent({
 		MarkdownContentEditor: Vue.extend(MarkdownContentEditor),
 		Editor: getEditorInstance,
 	},
+	inheritAttrs: false,
 	provide() {
 		return {
 			isEmbedded: this.isEmbedded,