ShareLinks: disable tag links, actually hide add-to-playlist/collection

The movie detail page's Tags section lives in its own .itemTags container,
not inside .detailsGroupItem like genres/studios/cast, so tag chips stayed
clickable for guests. Disable those links too.

The add-to-playlist and add-to-collection entries in the item's "..."
menu render with data-id="playlist"/data-id="addtocollection", not
data-action="addtoplaylist"/"addtocollection" as previously assumed —
that selector matched an unrelated list-row button and never hid the
actual menu items. Target the correct attribute so both are hidden.

Also drop the specific plugin name from the guest-hidden-selectors
description in favor of generic wording; the default selector value
is unchanged.

Jellyfin.Plugin.ShareLinks/Web/configPage.html

@@ -125,7 +125,7 @@
 
                         <div class="sl-field inputContainer" style="grid-column: 1 / -1;">
                             <input is="emby-input" type="text" id="GuestHiddenSelectors" label="Guest hidden selectors (CSS, comma-separated)" />
-                            <div class="fieldDescription">Elements hidden from guest sessions, e.g. other plugins' buttons. Default hides the AI Search UI.</div>
+                            <div class="fieldDescription">Elements hidden from guest sessions, e.g. other plugins' buttons. The default hides a plugin I had installed that injects its own floating UI into the web client.</div>
                         </div>
 
                         <div class="sl-field inputContainer">