Update syncback rules and property filter defaults

- Changed the default value of `sync_unscriptable` in `SyncbackRules` from `true` to `false` to better reflect intended behavior.
- Adjusted the property filter logic to align with the updated default, ensuring consistent handling of unscriptable properties.

These changes improve the clarity and functionality of the syncback feature, enhancing its overall reliability.

src/syncback/mod.rs

@@ -1047,7 +1047,7 @@ pub struct SyncbackRules {
     #[serde(skip_serializing_if = "Option::is_none")]
     sync_current_camera: Option<bool>,
     /// Whether or not to sync properties that cannot be modified via scripts.
-    /// Defaults to `true`.
+    /// Defaults to `false`.
     #[serde(skip_serializing_if = "Option::is_none")]
     sync_unscriptable: Option<bool>,
     /// Whether to skip serializing referent properties like `Model.PrimaryPart`

src/syncback/property_filter.rs

@@ -40,7 +40,7 @@ pub fn filter_properties_with_stats<'inst>(
         .syncback_rules
         .as_ref()
         .and_then(|s| s.sync_unscriptable)
-        .unwrap_or(true);
+        .unwrap_or(false);
 
     let database = rbx_reflection_database::get().unwrap();
     let class_data = database.classes.get(inst.class.as_str());