Fix system note difference highlighting
What does this MR do and why?
When rendering a changed title system note, it attempts to render those titles with our markdown pipeline. However this can cause a variety of strange situations. For example, if the title is
#55 title change and lots moreand it's changed to
#55 title change _and_ x^2 lots more
Solution is to force it into a code block and not render the markdown. Description differences are also shown as code.
The use of <div> keeps markdown from parsing its contents. Using <code> keeps our various filters (like references and SpacedLinkFilter) from detecting anything.
References
Screenshots or screen recordings
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How to set up and validate locally
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Create issue with the title
#55 title change and lots more -
Change the title to
#55 title change _and_ x^2 lots more. A system note should be added that looks like this
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Change the title to
#55 titles change and x^2 lots more. A system note should be added that looks like this
MR acceptance checklist
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Related to #15349 (closed)