Enable Sync on Apple platforms (duckduckgo#1738)

Co-authored-by: Brad Slayter <SlayterDev@users.noreply.github.com>

Author: ayoy

overrides/ios-override.json

@@ -131,7 +131,8 @@
             }
         },
         "sync": {
-            "state": "internal"
+            "state": "enabled",
+            "minSupportedVersion": "7.104.0"
         },
         "trackerAllowlist": {
             "state": "enabled",

overrides/macos-override.json

@@ -544,7 +544,8 @@
             }
         },
         "sync": {
-            "state": "internal"
+            "state": "enabled",
+            "minSupportedVersion": "1.70.0"
         },
         "trackerAllowlist": {
             "settings": {