Decrease start backk-off time to 8 seconds

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

@@ -123,7 +123,7 @@ public class ServiceSynchronize extends LifecycleService {
     private static final int NOTIFICATION_SYNCHRONIZE = 1;
     private static final int NOTIFICATION_UNSEEN = 2;
 
-    private static final int CONNECT_BACKOFF_START = 32; // seconds
+    private static final int CONNECT_BACKOFF_START = 8; // seconds
     private static final int CONNECT_BACKOFF_MAX = 1024; // seconds (1024 sec ~ 17 min)
     private static final long STORE_NOOP_INTERVAL = 9 * 60 * 1000L; // ms
     private static final int ATTACHMENT_AUTO_DOWNLOAD_SIZE = 32 * 1024; // bytes