Update tests to ensure that infractions sent to the DB are NOT truncated (even if so on Discord's side)

[ichard26]

Moving this below

        if reason:
            reason = textwrap.shorten(reason, width=512, placeholder="...")

causes a change in behaviour.

I assume the behaviour we want is for the full message to be sent to the database, but the reason to be trimmed in the audit log (I assume because there's a limit there), but now it's also trimmed in the database.

Originally posted by @wookie184 in #2316 (comment)

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We should modify the tests to catch this too

bot/tests/bot/exts/moderation/infraction/test_infractions.py

Line 16 in 36a9ac9

class TruncationTests(unittest.IsolatedAsyncioTestCase):

You can do that here if you want otherwise I can open an issue for it.