Nested numbered lists broken in Gists

Nested numbered lists seem to not be recognized in gists.

Check out a minimal example here: https://gist.github.com/wolf99/fa4048c083d97340b5dfe31573579806

It works on GitHub main and in issues, as can be seen here:

1. This is a list item
1.1. This is a correctly nested numbered list item
2. This is a list item

從 https://gist.github.com/wolf99/fa4048c083d97340b5dfe31573579806 的最小 Gist 範例開始，將其轉譯結果與 GitHub main 上以及 issue 中的相同清單進行比較。追蹤 Gists 如何選取並轉譯 markup 程式庫，然後確認巢狀的編號項目在這三種情境中都能被辨識並一致顯示。

由索引模型根據 Issue 內容生成。