Update datastore xtriggers on restart.

Author: hjoliver

cylc/flow/xtrigger_mgr.py

@@ -574,6 +574,8 @@ def load_xtrigger_for_restart(self, row_idx: int, row: Tuple[str, str]):
             LOG.info("LOADING satisfied xtriggers")
         sig, results = row
         self.sat_xtrig[sig] = json.loads(results)
+        # Tell the datastore this xtrigger is satisfied.
+        self.data_store_mgr.delta_task_xtrigger(sig, True)
 
     def _get_xtrigs(self, itask: 'TaskProxy', unsat_only: bool = False,
                     sigs_only: bool = False):