fix: Do not ask for guest name on read only pdfs

Signed-off-by: Julius Härtl <jus@bitgrid.net>

[skip ci]

src/view/Office.vue

@@ -264,7 +264,7 @@ export default {
 		}
 		this.postMessage.registerPostMessageHandler(this.postMessageHandler)
 
-		if (shouldAskForGuestName()) {
+		if (shouldAskForGuestName(this.mime, this.permissions?.includes('W'))) {
 			const { default: GuestNamePicker } = await import(
 				/* webpackChunkName: 'GuestNamePicker' */
 				'../components/GuestNamePicker.vue')