Cannot open PrivateChannel when reviewing QOTW

[danthe1st]

1. Describe the bug
   When a QOTW submission is reviewed with the submission author not allowing DMs from the bot, the following exception occurs:

ForkJoinPool.commonPool-worker-668            UserNotificatio ERROR  Could not open PrivateChannel with user <REDACTED>
net.dv8tion.jda.api.exceptions.ErrorResponseException: 50007: Cannot send messages to this user
        at net.dv8tion.jda.api.requests.Request.createErrorResponseException(Request.java:156)
        at net.dv8tion.jda.internal.requests.RestActionImpl.handleResponse(RestActionImpl.java:297)
        at net.dv8tion.jda.api.requests.Request.handleResponse(Request.java:290)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.handleResponse(Requester.java:413)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.access$300(Requester.java:360)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:241)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:156)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:140)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.execute(Requester.java:383)
        at net.dv8tion.jda.api.requests.SequentialRestRateLimiter$Bucket.execute(SequentialRestRateLimiter.java:468)
        at net.dv8tion.jda.api.requests.SequentialRestRateLimiter$Bucket.run(SequentialRestRateLimiter.java:514)
        at java.base@25.0.2/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1090)
        at java.base@25.0.2/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:614)
        at java.base@25.0.2/java.lang.Thread.runWith(Thread.java:1487)
        at java.base@25.0.2/java.lang.Thread.run(Thread.java:1474)
        at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:832)
        at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:808)
Caused by: net.dv8tion.jda.api.exceptions.ContextException
        at net.dv8tion.jda.internal.requests.restaction.operator.RestActionOperator.contextWrap(RestActionOperator.java:119)
        at net.dv8tion.jda.internal.requests.restaction.operator.FlatMapRestAction.queue(FlatMapRestAction.java:50)
        at net.discordjug.javabot.systems.notification.UserNotificationService.sendDirectMessage(UserNotificationService.java:35)
        at net.discordjug.javabot.systems.notification.QOTWNotificationService.sendAccountIncrementedNotification(QOTWNotificationService.java:51)
        at net.discordjug.javabot.systems.qotw.submissions.SubmissionManager.acceptSubmission(SubmissionManager.java:204)
        at net.discordjug.javabot.systems.qotw.submissions.SubmissionManager.lambda$handleSelectReview$0(SubmissionManager.java:136)
        at net.dv8tion.jda.api.requests.Request.lambda$onSuccess$0(Request.java:131)
        at java.base@25.0.2/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.compute(ForkJoinTask.java:1750)
        at java.base@25.0.2/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.compute(ForkJoinTask.java:1742)
        at java.base@25.0.2/java.util.concurrent.ForkJoinTask$InterruptibleTask.exec(ForkJoinTask.java:1659)
        at java.base@25.0.2/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:511)
        at java.base@25.0.2/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1450)
        at java.base@25.0.2/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:2019)
        at java.base@25.0.2/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:187)
        ... 2 common frames omitted

2. Steps to reproduce

• Configure the bot for QOTW
• Add a new QOTW question
• Start the QOTW
• Answer the QOTW
• Make sure the user answering the QOTW has DMs disabled
• Close the QOTW
• Review the QOTW.

3. Expected behavior
   The bot shouldn't log the exception when it cannot open a DM channel.