feat(backend): edit versions are kept in groups and channels by default

backend/src/utils/policy/defaults.py

@@ -1,8 +1,8 @@
 from utils.policy.models import CaptureToggles, ChatKind
 
 DEFAULTS: dict[ChatKind, CaptureToggles] = {
-    ChatKind.CHANNEL: CaptureToggles(),
-    ChatKind.GROUP: CaptureToggles(messages=True),
+    ChatKind.CHANNEL: CaptureToggles(track_edits_deletes=True),
+    ChatKind.GROUP: CaptureToggles(messages=True, track_edits_deletes=True),
     ChatKind.DM: CaptureToggles(
         messages=True,
         media=True,