Previously, the email had a line that says "Click the button below". This
sounds weird as the plain text emails don't have buttons and only had links.
We should change "Click the button below" to "Click the link below" which
makes more sense.
This is a continuation of #24260 where we have redrafted the "contact us"
line in various emails, but the plain-text versions of those emails remains
untouched. We want to also update those versions and ensure that they match
with our emails.
Fixes: #25198.
Checked the email looked OK in `/emails` for both creating realm and
registering within an existing one.
Not sure zerver/tests/test_i18n.py test has been suppressed correctly.
Fixes#17786.
For almost all of these, the verbose support offer clause is almost the same
as the non-verbose version. The distinction carries extra carrying cost when
coming up with new copy, testing new email designs, etc.