Override IDLE of o2.pl

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

@@ -1679,7 +1679,9 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                     }
 
                     // https://tools.ietf.org/html/rfc2177
-                    final boolean capIdle = iservice.hasCapability("IDLE");
+                    final boolean capIdle =
+                            iservice.hasCapability("IDLE") &&
+                                    !"poczta.o2.pl".equals(account.host);
                     final boolean capUtf8 =
                             iservice.hasCapability("UTF8=ACCEPT") ||
                                     iservice.hasCapability("UTF8=ONLY");