Prettier would do this anyway, but it’s separated out for a more
reviewable diff. Generated by ESLint.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
When quoting a message with fenced code blocks without a language,
we used to have ambiguity in which '```' fence terminates the quote.
This commit adds explicitly non-interfering fences, which fixes the
above issue as well as makes the raw message easier to quickly read.
Fixes#12446.
Steve Howell
Anders Kaseorg
Stefan Weil
Rohitt Vashishtha