[FLINK-40043] fix the paimon pipeline job couldn’t increase job parallelism.

[sd4324530]

Fixed the issue where Paimon pipeline job couldn’t increase job parallelism.

Reproduction method:

1. Stop the CDC job using a savepoint
2. Increase the parallelism of the job
3. Start the job using a savepoint

Error message:

java.util.NoSuchElementException
	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:1000)
	at org.apache.flink.cdc.connectors.paimon.sink.v2.PaimonSink.restoreWriter(PaimonSink.java:101)
	at org.apache.flink.streaming.runtime.operators.sink.StatefulSinkWriterStateHandler.createWriter(StatefulSinkWriterStateHandler.java:120)
	at org.apache.flink.streaming.runtime.operators.sink.SinkWriterOperator.initializeState(SinkWriterOperator.java:153)
	at org.apache.flink.cdc.runtime.operators.sink.DataSinkWriterOperator.initializeState(DataSinkWriterOperator.java:132)
	at org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.initializeOperatorState(StreamOperatorStateHandler.java:147)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:294)
	at org.apache.flink.streaming.runtime.tasks.RegularOperatorChain.initializeStateAndOpenOperators(RegularOperatorChain.java:106)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreStateAndGates(StreamTask.java:858)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$restoreInternal$5(StreamTask.java:812)
	at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.call(StreamTaskActionExecutor.java:55)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreInternal(StreamTask.java:812)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:771)
	at org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:970)
	at org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:939)
	at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:763)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:575)
	at java.base/java.lang.Thread.run(Thread.java:829)