Prevent multiple utterances from the same article

Change how the bot interacts with each knowledge article.

The chatbot looks at headers and then pulls utterances from them. Having more than 1 H2 heading in an article results in the bot pulling two links from the same article instead of two utterances from different articles.

The issue is that some articles require a Table of Contents (ToC), which is built by headers. This current method prevents us from using ToCs or forces us to manually build the table of contents to avoid this issue.

It would be great if the bot compares the article number it uses for one utterance and then disregards that article for other utterances when additional articles on the same topic are available. Having that would allow us to use ToCs again.