Retry operations until folder closed

app/src/main/java/eu/faircode/email/Core.java

@@ -150,7 +150,7 @@ class Core {
             Log.i(folder.name + " executing operations=" + ops.size());
             while (retry < LOCAL_RETRY_MAX && ops.size() > 0 &&
                     state.batchCanRun(folder.id, priority, sequence) &&
-                    state.isRunning() && state.isRecoverable()) {
+                    state.isRunning() && ifolder.isOpen()) {
                 TupleOperationEx op = ops.get(0);
 
                 try {