[bisq-network/bisq] bisq v1.6.5 hanged on shutdown attemp (#5561)

[unofficial bisq contributor]

happened again. last logs:
```

 [JavaFX Application Thread] INFO  b.c.p.f.FeeService: BTC tx fee: txFeePerVbyte=27 minFeePerVbyte=2
 [InputHandler-oubgf46wb7n7qntj.onion:9999] WARN  b.n.p.n.Connection: Unknown reason for exception at socket: TorSocket[addr=oubgf46wb7n7qntj.onion,port=9999, localPort=0]
	peer=Optional[oubgf46wb7n7qntj.onion:9999]
	Exception=java.lang.OutOfMemoryError: Java heap space
 [InputHandler-fz4g25572cg2ztdlfbuknfong7e45wooaidkm3necakz46a6pgicrayd.onion:9999] WARN  b.n.p.n.Connection: Unknown reason for exception at socket: TorSocket[addr=fz4g25572cg2ztdlfbuknfong7e45wooaidkm3necakz46a6pgicrayd.onion,port=9999, localPort=0]
	peer=Optional[fz4g25572cg2ztdlfbuknfong7e45wooaidkm3necakz46a6pgicrayd.onion:9999]
	Exception=java.lang.OutOfMemoryError: Java heap space
 [pool-94-thread-1] ERROR b.n.p.n.ProtoOutputStream: Failed to write envelope java.net.SocketException: An established connection was aborted by the software in your host machine
	at java.base/sun.nio.ch.NioSocketImpl.implWrite(Unknown Source)
	at java.base/sun.nio.ch.NioSocketImpl.write(Unknown Source)
	at java.base/sun.nio.ch.NioSocketImpl$2.write(Unknown Source)
	at java.base/java.net.Socket$SocketOutputStream.write(Unknown Source)
	at com.google.protobuf.CodedOutputStream$OutputStreamEncoder.doFlush(CodedOutputStream.java:3062)
	at com.google.protobuf.CodedOutputStream$OutputStreamEncoder.flush(CodedOutputStream.java:2974)
	at com.google.protobuf.AbstractMessageLite.writeDelimitedTo(AbstractMessageLite.java:96)
	at bisq.network.p2p.network.ProtoOutputStream.writeEnvelopeOrThrow(ProtoOutputStream.java:63)
	at bisq.network.p2p.network.ProtoOutputStream.writeEnvelope(ProtoOutputStream.java:46)
	at bisq.network.p2p.network.SynchronizedProtoOutputStream.lambda$writeEnvelope$0(SynchronizedProtoOutputStream.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
 [Connection:SendCloseConnectionMessage-52405831-9b7d-46e2-8859-e7f301fe65b9] ERROR b.n.p.n.SynchronizedProtoOutputStream: Failed to write envelope. ExecutionException java.util.concurrent.ExecutionException: bisq.network.p2p.network.BisqRuntimeException: Failed to write envelope 
 [Thread-12] INFO  b.n.p.n.TorNetworkNode: Tor shut down completed 
 [JavaFX Application Thread] INFO  b.n.p.n.NetworkNode: Shutdown of node Optional
 [JavaFX Application Thread] INFO  b.n.p.n.NetworkNode: Shutdown completed with all connections  
 [JavaFX Application Thread] INFO  b.c.a.BisqExecutable: P2PService shutdown completed 
 [JavaFX Application Thread] INFO  b.c.p.PersistenceManager: Start flushAllDataToDisk 
 [JavaFX Application Thread] INFO  b.c.p.PersistenceManager: Serializing DaoStateStore took 284  
 [Write-DaoStateStore_to-disk] ERROR b.c.s.CommonSetup: Uncaught Exception from thread to-disk 
 [Write-DaoStateStore_to-disk] ERROR b.c.s.CommonSetup: throwableMessage= Java heap space 
 [Write-DaoStateStore_to-disk] ERROR b.c.s.CommonSetup: throwableClass= class java.lang. 
 [Write-DaoStateStore_to-disk] ERROR b.c.s.CommonSetup: Stack trace:
java.lang.OutOfMemoryError: Java heap space
 
```

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