fix: deadlock between session and web mutexes (#3251)

Fixes #3242.

Introduced by #2693.

libtransmission/web.cc

@@ -465,10 +465,10 @@ private:
                     curl_multi_add_handle(multi.get(), task->easy());
                 }
                 impl->queued_tasks.clear();
-
-                impl->resumePausedTasks();
             }
 
+            impl->resumePausedTasks();
+
             // Adapted from https://curl.se/libcurl/c/curl_multi_wait.html docs.
             // 'numfds' being zero means either a timeout or no file descriptors to
             // wait for. Try timeout on first occurrence, then assume no file