feat: Send webxdc name instead of raw file name in pre-messages. Display it in summary (#7790)

The webxdc file name itself isn't informative for users. Still, send and display it if the webxdc
manifest can't be parsed, it's better than sending "Mini App" and this isn't a normal case anyway.

src/summary.rs

@@ -231,7 +231,7 @@ impl Message {
                             .unwrap_or_else(|_| "ErrWebxdcName".to_string()),
                     );
                 } else {
-                    type_file = Some(viewtype.to_locale_string(context).await);
+                    type_file = self.get_filename();
                 }
                 append_text = true;
             }