[evolution-data-server] Hard-code freeze break request ][

[Milan Crha <mcrha redhat com>]

        Hello again,
it turned out that a write to an IMAP folder of a certain message type
can lead to a data loss, which was reported as [1]. The bug contains a
trivial fix, which would be good to have in 3.12.0.
        Thanks and bye,
        Milan

[1] https://bugzilla.gnome.org/show_bug.cgi?id=726723