fix(spp_demo,spp_mis_demo_v2): group naming, unique seeded names, payment fixes

- Story households use family-name-only (Santos, Dela Cruz, etc.)
- Manuel Santos elderly renamed to Pangilinan to avoid Santos conflict
- Tutorial families renamed: Santos→Tolentino, Cruz→Salazar, Reyes→Mercado
- Locale names updated for si_LK and fr_TG (family name only for groups)
- Expanded name pools: fil_PH 714, si_LK 535, fr_TG 561 surnames
- Seeded generator: suffix filter for compound names, unique names from
  shuffled pool, shared family name within households
- Fix cycle creation: use today then backdate via SQL to bypass
  _check_dates constraint (fixes Santos 0 payments, Gutierrez  bug)
- Batch create optimization: mail_create_nolog + tracking_disable

Author: emjay0921

spp_demo/locale_providers/fil_PH/__init__.py

@@ -1468,7 +1468,7 @@ def _create_household_story(self, story):
         # Build group values
         vals = {
             "demo_data_group_generator_id": self.id,
-            "name": head_info.get("name", story["name"]),
+            "name": story["name"],
             "is_registrant": True,
             "is_group": True,
             "registration_date": registration_date,