Fix guest sign-in on Jellyfin 12 (#22)

The sign-in page stored the guest's server entry with LastConnectionMode 1
(Remote) but only a ManualAddress. jellyfin-web 12 builds its ApiClient from
that entry, gets no address, throws "Must supply a serverAddress" and never
leaves the splash screen. Store mode 2 (Manual), which is what jellyfin-web
itself writes after a normal sign-in.

Also hide the Modern layout header links, user menu and drawer toggle for
guests (Modern is the default in 12), and close the item action sheet on
desktop when ShareLink opens its popup. Escape only closes it in the TV
layout, a click on the dialog container works everywhere.

Bump to 1.0.6.0.

Jellyfin.Plugin.ShareLinks/meta.json

@@ -1,12 +1,12 @@
 {
   "guid": "68540b76-ee74-436d-85ff-2abc884bbea6",
   "name": "ShareLinks",
-  "version": "1.0.5.0",
+  "version": "1.0.6.0",
   "targetAbi": "10.11.0.0",
   "framework": "net9.0",
   "owner": "Franciskid",
   "overview": "Secure expiring guest-share links for Jellyfin items.",
   "description": "Adds secure, expiring share links for Jellyfin items with JSON-backed storage, token hashing, and cleanup scaffolding.",
   "category": "General",
-  "timestamp": "2026-09-11T12:00:00.0000000Z"
+  "timestamp": "2026-09-18T12:00:00.0000000Z"
 }