Add TODO for "empty indexes" with a few useful links

Author: tianon

TODO.md

@@ -17,3 +17,4 @@
 - arch-specific namespaces: https://github.com/docker-library/official-images/issues/17896#issuecomment-2479950192
 - `kdevtmpfsi` / "malware found in image": https://github.com/docker-library/postgres/issues/1307#issuecomment-2584509464, https://github.com/docker-library/postgres/issues/1054#issuecomment-1447091521
 - media types: "(OCI) v1" vs "(Docker) v2": https://github.com/docker-library/postgres/discussions/1329#discussioncomment-12342451, https://github.com/docker-library/official-images/issues/14938#issuecomment-1607883130, https://github.com/docker-library/python/issues/936#issuecomment-2221667227
+- empty indexes/lists/images ("no matching manifest" / build system often pushes tags before builds are complete): https://github.com/docker-library/golang/issues/550#issuecomment-2654671051, https://github.com/docker-library/official-images/issues/16625#issuecomment-2062242608