refactor: Expose the new return type of Client::send_call_notifications_if_needed in the FFI layer

Author: jmartinesp

bindings/matrix-sdk-ffi/CHANGELOG.md

@@ -8,6 +8,8 @@ All notable changes to this project will be documented in this file.
 
 Breaking changes:
 
+- `Client::send_call_notification_if_needed` now returns `Result<bool>` instead of `Result<()>` so we can check if 
+  the event was sent.
 - `Client::upload_avatar` and `Timeline::send_attachment` now may fail if a file too large for the homeserver media
   config is uploaded.
 - `UploadParameters` replaces field `filename: String` with `source: UploadSource`.

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

@@ -777,9 +777,13 @@ impl Room {
     /// It will configure the notify type: ring or notify based on:
     ///  - is this a DM room -> ring
     ///  - is this a group with more than one other member -> notify
-    pub async fn send_call_notification_if_needed(&self) -> Result<(), ClientError> {
-        self.inner.send_call_notification_if_needed().await?;
-        Ok(())
+    ///
+    /// Returns:
+    ///  - `Ok(true)` if the event was successfully sent.
+    ///  - `Ok(false)` if we didn't send it because it was unnecessary.
+    ///  - `Err(_)` if sending the event failed.
+    pub async fn send_call_notification_if_needed(&self) -> Result<bool, ClientError> {
+        Ok(self.inner.send_call_notification_if_needed().await?)
     }
 
     /// Send a call notification event in the current room.