Merge pull request #3327 from matrix-org/andybalaam/expose-wait-e2ee

ffi: Expose Encryption::wait_for_e2ee_initialization_tasks

Author: andybalaam

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

@@ -367,4 +367,10 @@ impl Encryption {
             }
         })))
     }
+
+    /// Waits for end-to-end encryption initialization tasks to finish, if any
+    /// was running in the background.
+    pub async fn wait_for_e2ee_initialization_tasks(&self) {
+        self.inner.wait_for_e2ee_initialization_tasks().await;
+    }
 }