Explicitly set "added time" when adding new torrent

Don't overwrite "added time" with possibly incorrect value.
Explicitly set "added time" when adding new torrent.

PR #15644.

src/base/bittorrent/session.cpp

@@ -31,6 +31,7 @@
 
 #include <algorithm>
 #include <cstdint>
+#include <ctime>
 #include <queue>
 #include <string>
 #include <utility>
@@ -2196,6 +2197,8 @@ bool Session::addTorrent_impl(const std::variant<MagnetUri, TorrentInfo> &source
     else
         p.flags |= lt::torrent_flags::auto_managed;
 
+    p.added_time = std::time(nullptr);
+
     if (!isFindingIncompleteFiles)
         return loadTorrent(loadTorrentParams);