db: make ChangesetStatus.get_status return an actual string that can be joined and used in mako templates

kallithea/model/db.py

@@ -1977,7 +1977,7 b' class ChangesetStatus(meta.Base, BaseDbM'
 
     @classmethod
     def get_status_lbl(cls, value):
-        return cls.STATUSES_DICT.get(value)
+        return str(cls.STATUSES_DICT.get(value))  # using str to evaluate translated LazyString at runtime
 
     @property
     def status_lbl(self):

kallithea/model/notification.py

@@ -192,7 +192,7 b' class EmailNotificationModel(object):'
         bracket_tags = []
         status_change = kwargs.get('status_change')
         if status_change:
-            bracket_tags.append(str(status_change))  # apply str to evaluate LazyString before .join
+            bracket_tags.append(status_change)
         if kwargs.get('closing_pr'):
             bracket_tags.append(_('Closing'))
         if bracket_tags: