Fix streaming_ready_size_ calculation.

GitOrigin-RevId: 62ad330749e88188697de7f23b525ac9e426d780

td/telegram/files/FileLoader.cpp

@@ -71,6 +71,7 @@ void FileLoader::update_download_offset(int64 offset) {
   for (auto &it : part_map_) {
     it.second.second.reset();  // cancel_query(it.second.second);
   }
+  update_estimated_limit();
   loop();
 }
 

td/telegram/files/PartsManager.cpp

@@ -58,7 +58,7 @@ void PartsManager::set_streaming_limit(int64 limit) {
   }
   for (int part_i = 0; part_i < part_count_; part_i++) {
     if (is_part_in_streaming_limit(part_i) && part_status_[part_i] == PartStatus::Ready) {
-      streaming_ready_size_ = get_part(part_i).size;
+      streaming_ready_size_ += get_part(part_i).size;
     }
   }
 }