The status object, which can be returned after validating an HTMLForm,
can contain message objects. These message objects can be constructed
with the full feature set provided by Message, e.g. raw parameters.
The handling of these status objects in HTMLForm basically prevented
some features of the Message object in the status, as it parsed the
messages through the Parser, which does not recognize these raw
parameters as such and escapes them wrongly.
This behaviour is fixed with this change.
Bug: T240774
Change-Id: I152ec51f317799572bf6791e110cd72c42da82a0
c13605dba4