[DPE-3680] fix: rollback rolling-ops; 1-unit wouldn't restart (#124)

lib/charms/rolling_ops/v0/rollingops.py

@@ -89,7 +89,7 @@ def _on_trigger_restart(self, event):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 6
+LIBPATCH = 5
 
 
 class LockNoRelationError(Exception):
@@ -327,9 +327,6 @@ def _on_relation_changed(self: CharmBase, event: RelationChangedEvent):
         Then, if we are the leader, fire off a process locks event.
 
         """
-        if self.name not in os.environ.get("JUJU_DISPATCH_PATH", ""):
-            return
-
         lock = Lock(self)
 
         if lock.is_pending():