Currently, all of the links created on Special:GlobalWatchlist have target='_blank' to ensure that they open in a separate tab. However, links within the user's edit summary, either wiki links or automatically generated section links, don't open in a separate tab.
Possible approaches:
- in watchlistUtils try to use a regex to add target to all links as part of rawToSummary
- in GlobalWatchlistLinker try to use a regex in fixLocalLinks
- in SiteDisplay.js use something like $comment.find( 'a' ).attr( 'target', '_blank' ), but that doesn't solve the issue for the Vue display