Add "This call is being recorded" hint

...when participant has no permissions to stop the recording but clicks on the recording icon.

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/activities/CallActivity.java

@@ -544,6 +544,8 @@ public class CallActivity extends CallBaseActivity {
         binding.callRecordingIndicator.setOnClickListener(l -> {
             if (isAllowedToStartOrStopRecording()) {
                 callRecordingViewModel.clickRecordButton();
+            } else {
+                Toast.makeText(context, context.getResources().getString(R.string.record_active_info), Toast.LENGTH_LONG).show();
             }
         });
     }

app/src/main/res/values/strings.xml

@@ -568,6 +568,7 @@
     <string name="record_stop_loading">stopping…</string>
     <string name="record_stop_confirm_title">Stop Call recording</string>
     <string name="record_stop_confirm_message">"Do you really want to stop the recording?"</string>
+    <string name="record_active_info">"This call is being recorded"</string>
 
     <!-- Shared items -->
     <string name="shared_items_media">Media</string>