notification: use viewargs for notif_entity_updated instead of transaction_data
Now that notifications use separate sessions, they can't rely on the
original transaction_data being around, so pass the data through view
arguments instead, so the notification view knows what changed on
updated entities.
Closes #2936180
addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile