Apparently, we didn't have one of these, and thus had a moderate
number of generally very old violations in the codebase. Fix this and
clear the ones that exist..
This test started failing recently; the apparent cause is that
sometimes, zerver/lib/generate_test_data.py generates messages
containing bulleted lists, and those don't end with a `</p>` tag since
they end with `</ul>` instead; the result is that this test failed
nondeterministically in CI.
There isn't really a useful version of this check to do that would
cover that case (as well as the entire message body being a bulleted
list), so we just remove the check; I don't think it's ever caught any
actual bugs.
* In most cases, eslint --fix with the right comma-dangle settings was
able to update the code correctly.
* The exceptions were cases where the parser incorrectly treated the
arguments to functions as lists/objects and added commas; these are
detectable with linters, and we fixed manually. Since this is test
code, we can be reasonably confident that just fixing the failures
suffices to correct any bugs introduced by making changes
automatically.
I have a hunch that the messages sent from different files
are interfering with each other as well. This commit will make
it clear if indeed this is the case.