feat(registry): add avatar promo and Slack notification templates (#3279)

* feat(registry): add avatar promo and Slack notification templates

* fix(registry): remove local emoji font dependency

* fix(docs): regenerate Slack template catalog source

registry/catalog-artifact/local-vectors.json

@@ -2,7 +2,7 @@
   "model": "bge-small-en-v1.5",
   "modelRevision": "ea104dacec62c0de699686887e3f920caeb4f3e3",
   "dimensions": 384,
-  "revision": "6e83353888f7e2114f5195215d8b0cdf8794f925232ff8811428ac4d3979a7ba",
+  "revision": "192d7e2178533342f6242faf4556f7d8d3c23e106b8dbf79170da2aa5ff45adc",
   "names": [
     "ai-chat-reveal",
     "ai-generation-canvas",
@@ -137,6 +137,7 @@
     "halftone-dissolve",
     "halftone-field",
     "headline-slam",
+    "heygen-avatar-promo-card",
     "hw-arrow",
     "hw-boil",
     "hw-box-label",
@@ -267,6 +268,7 @@
     "signup-flow",
     "simulated-cursor",
     "skeleton-reveal",
+    "slack-notification-ad",
     "slit-scan-reveal",
     "slot-machine-roll",
     "social-proof-card",