Delay notifications for summary generation

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

@@ -5131,7 +5131,10 @@ class Core {
                         }
                 }
             } finally {
-                db.message().setMessageNotifying(message.id, 0);
+                if (message.notifying == EntityMessage.NOTIFYING_RULE_PENDING)
+                    message.notifying = EntityMessage.NOTIFYING_IGNORE;
+                else
+                    db.message().setMessageNotifying(message.id, 0);
             }
 
             reportNewMessage(context, account, folder, message);

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

@@ -97,6 +97,7 @@ public class EntityMessage implements Serializable {
     static final String TABLE_NAME = "message";
 
     static final int NOTIFYING_IGNORE = -2;
+    static final int NOTIFYING_RULE_PENDING = -3;
 
     static final Integer ENCRYPT_NONE = 0;
     static final Integer PGP_SIGNENCRYPT = 1;

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

@@ -1690,6 +1690,7 @@ public class EntityRule {
             return false;
 
         if (!this.async && this.id != null) {
+            message.notifying = EntityMessage.NOTIFYING_RULE_PENDING;
             EntityOperation.queue(context, message, EntityOperation.RULE, this.id, browsed);
             return true;
         }