WebUI: Fix memory leak

See #22734, there is a memory leak in the MooTools .destroy(), this replaces all uses of that with the browser native .remove().

This also overrides the MooTools Document.id function, which is used by $(id). The original function always allocates an ID to elements it selects, the override doesn't, and is also a little more efficient.

Closes #22734.
PR  #22754.

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Co-authored-by: Chocobo1 <Chocobo1@users.noreply.github.com>

src/webui/www/private/scripts/search.js

@@ -248,7 +248,7 @@ window.qBittorrent.Search ??= (() => {
         if (state && state.running)
             stopSearch(searchId);
 
-        tab.destroy();
+        tab.remove();
 
         fetch("api/v2/search/delete", {
             method: "POST",