Re-enable JunitTest_forms_unoapi_2 forms.ODateModel

f9905401 "tdf#125170 Deliver mouse events also
when clicking into document content" had disabled it because its
gerrit_linux_clang_dbgutil Jenkins build had failed it successively like

> LOG> Execute: Date
> LOG> try to set:
> LOG> old = com.sun.star.util.Date@271053e1{1, 1, 1800}
> LOG> new = com.sun.star.util.Date@589838eb{2, 0, 0}
> warn:tools.datetime:303:1063:tools/source/datetime/tdate.cxx:102: Date::setDateFromDMY - sure about 0 year? It's not in the calendar.
> LOG> Property Date is void
> LOG> Value for 'Date' hasn't changed as expected
> LOG> result = com.sun.star.util.Date@42dafa95{1, 1, 1800}
> Method Date finished with state FAILED
> LOG> Date: COMPLETED.FAILED

(<https://ci.libreoffice.org/job/gerrit_linux_clang_dbgutil/32715/>).

But it is unclear how that commit would have affected that test, and at least a
recent local build of mine succeeds with

> LOG> Execute: Date
> LOG> try to set:
> LOG> old = com.sun.star.util.Date@dc24521{0, 0, 0}
> LOG> new = com.sun.star.util.Date@10bdf5e5{1, 0, 0}
> warn:tools.datetime:10048:10220:tools/source/datetime/tdate.cxx:102: Date::setDateFromDMY - sure about 0 year? It's not in the calendar.
> LOG> Property Date is void
> LOG> Property 'Date' OK
> LOG> result = com.sun.star.util.Date@6e1ec318{1, 0, 0}
> Method Date finished with state OK
> LOG> Date: COMPLETED.OK

(note the difference of initial date, {1, 1, 1800} vs. {0, 0, 0}, whether or not
that is relevant), so lets re-enable the test for now and see...

Change-Id: I53b462954650e32de85c795c94f9b8038dc01918
Reviewed-on: https://gerrit.libreoffice.org/72863
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

forms/qa/unoapi/forms_2.sce

@@ -15,7 +15,7 @@
 #   except in compliance with the License. You may obtain a copy of
 #   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 #
-# Flaky since tdf#125170 -o forms.ODateModel
+-o forms.ODateModel
 -o forms.OEditControl
 -o forms.OEditModel
 #i109939 -o forms.OFileControlModel