Fix scheduled backup jobs cancelling itself.

app/src/main/java/org/thoughtcrime/securesms/jobs/LocalBackupJob.java

@@ -56,9 +56,9 @@ public final class LocalBackupJob extends BaseJob {
                                                   .setQueue(QUEUE)
                                                   .setMaxInstancesForFactory(1)
                                                   .setMaxAttempts(3);
-    if (force || Build.VERSION.SDK_INT >= 31) {
+    if (force) {
       jobManager.cancelAllInQueue(QUEUE);
-    } else {
+    } else if (Build.VERSION.SDK_INT < 31) {
       parameters.addConstraint(ChargingConstraint.KEY);
     }