Pause torrent in all "fastresume rejected" cases

PR #17087.
Addition to #17064.

src/base/bittorrent/nativesessionextension.cpp

@@ -36,13 +36,10 @@
 namespace
 {
     void handleFastresumeRejectedAlert(const lt::fastresume_rejected_alert *alert)
-    {
-        if (alert->error.value() == lt::errors::mismatching_file_size)
     {
         alert->handle.unset_flags(lt::torrent_flags::auto_managed);
         alert->handle.pause();
     }
-    }
 }
 
 lt::feature_flags_t NativeSessionExtension::implemented_features()