Do this by default in EventPresentationModel so it automatically works
for all email subject messages.
Update messages to use this parameter. Also update email subject
messages that were trying to use parameters that didn't exist, and fix
message documentation that was completely wrong about what the
parameters were.
Also update translated messages to account for parameter shifts (in many
cases, these messages were using the wrong parameter or a nonexistent
one).
Bug: T219620
Change-Id: Ia420c4db13c95d91e1bfc4c7950942df5858379b
