feat(dbus): Update systemd unit state check to include 'activating'

Previously, the check only considered 'active' as a valid ActiveState.
This update ensures the system also accounts for units in the
'activating' state, improving compatibility with transitional states in
systemd services.

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/dbus_middleware1/systemd_helper.py

@@ -100,7 +100,10 @@ def simple_systemd(action: ServiceActions, unit: str, unmask: bool = False) -> O
             log.warning(f"could not get systemd unit {unit}")
             return False
 
-        return properties.UnitFileState == "enabled" and properties.ActiveState == "active"
+        return properties.UnitFileState == "enabled" and properties.ActiveState in (
+            "active",
+            "activating",
+        )
 
     elif action is ServiceActions.AVAILABLE:
         try: