Scope which extensions/settings/bots affect how change logs are displayed, so that we can decide what to create more tickets to investigate further

Acceptance criteria

• a list of extensions/settings/bots that affect how the watchlist logs are displayed
• an estimate of how widely they are used

This will lead to tickets in the future to help us with:

• consideration of any breaking changes that we could make, or things that are dependent on the current watchlist format
• considerations of improved UX that are implied by these things

Checklist

• Investigate various extensions/settings (except for the grouping setting as that's in another ticket)
• "DragNDrop" may create vague edit summaries, may be worth investigating
• Consider bot generated edits (on wikidata at end of automatically generated edit summary, there is a blue link to a page which lists bot summaries - see tags)
• Consider impacts our changes could have - e.g. are we likely to make a breaking change for a bot