[Bug] niconico search

Checklist (Your issue will be automatically closed if you delete this part)

• I make sure that there are no existing issues - open or closed - which I could contribute my information to.
• I understand that issues with limited impact, such as those occurring on specific devices or under specific network conditions, will not be fixed.
• I am able to reproduce the bug with the latest version given here: CLICK THIS LINK.
• I have attached the error report in the issue.

Describe the bug

Frequency

Steps to reproduce the bug

Device (e.g. Pixel 9 Pro)
Pixel 7 Pro

Error report

Exception

• User Action: get suggestions
• Request: 初音ミク
• Content Country: JP
• Content Language: ja-JP
• App Language: ja_JP
• Service: NicoNico (Anonymous)
• Version: 4.0.2
• OS: Linux Android 15 - 35

Crash log

org.schabi.newpipe.extractor.exceptions.ExtractionException: could not parse search suggestions.
	at org.schabi.newpipe.extractor.services.niconico.extractors.NiconicoSuggestionExtractor.suggestionList(NiconicoSuggestionExtractor.java:37)
	at org.schabi.newpipe.util.ExtractorHelper.lambda$suggestionsFor$2(ExtractorHelper.java:117)
	at org.schabi.newpipe.util.ExtractorHelper.$r8$lambda$kgV3vMftlbQH0zdv8hszrHLyMLU(Unknown Source:0)
	at org.schabi.newpipe.util.ExtractorHelper$$ExternalSyntheticLambda18.call(Unknown Source:4)
	at io.reactivex.rxjava3.internal.operators.single.SingleFromCallable.subscribeActual(SingleFromCallable.java:43)
	at io.reactivex.rxjava3.core.Single.subscribe(Single.java:4813)
	at io.reactivex.rxjava3.internal.operators.single.SingleToObservable.subscribeActual(SingleToObservable.java:36)
	at io.reactivex.rxjava3.core.Observable.subscribe(Observable.java:13131)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableMap.subscribeActual(ObservableMap.java:33)
	at io.reactivex.rxjava3.core.Observable.subscribe(Observable.java:13131)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableZip$ZipCoordinator.subscribe(ObservableZip.java:110)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableZip.subscribeActual(ObservableZip.java:72)
	at io.reactivex.rxjava3.core.Observable.subscribe(Observable.java:13131)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableMaterialize.subscribeActual(ObservableMaterialize.java:28)
	at io.reactivex.rxjava3.core.Observable.subscribe(Observable.java:13131)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableSwitchMap$SwitchMapObserver.onNext(ObservableSwitchMap.java:127)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver$DelayErrorInnerObserver.onNext(ObservableConcatMap.java:499)
	at io.reactivex.rxjava3.observers.SerializedObserver.onNext(SerializedObserver.java:114)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableDebounceTimed$DebounceTimedObserver.emit(ObservableDebounceTimed.java:143)
	at io.reactivex.rxjava3.internal.operators.observable.ObservableDebounceTimed$DebounceEmitter.run(ObservableDebounceTimed.java:168)
	at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:65)
	at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:56)
	at java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)

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**Additional context**

[InfinityLoop1308]

NicoNico's search suggestions haven't been working for a long time. I was waiting for it to recover, but it seems they don't plan to fix this issue.
Starting from the next version, NicoNico's search suggestions will be disabled.