change(ffi): add timeline configuration option for reporting UTDs

Author: stefanceriu

bindings/matrix-sdk-ffi/src/room.rs

@@ -237,8 +237,10 @@ impl Room {
             builder = builder.with_internal_id_prefix(internal_id_prefix);
         }
 
-        if let Some(utd_hook) = self.utd_hook.clone() {
-            builder = builder.with_unable_to_decrypt_hook(utd_hook);
+        if configuration.report_utds {
+            if let Some(utd_hook) = self.utd_hook.clone() {
+                builder = builder.with_unable_to_decrypt_hook(utd_hook);
+            }
         }
 
         let timeline = builder.build().await?;

bindings/matrix-sdk-ffi/src/timeline/configuration.rs

@@ -157,4 +157,8 @@ pub struct TimelineConfiguration {
     /// As this has a non negligible performance impact, make sure to enable it
     /// only when you need it.
     pub track_read_receipts: bool,
+
+    /// Whether this timeline instance should report UTDs through the client's
+    /// delegate.
+    pub report_utds: bool,
 }