Make the return of hardforkfor optional

[Gabriel-Trintinalia]

PR description

Make the return of hardforkfor optional.

For the EngineGetPayloadV3, when Shanghai and Cancun had the same milestone, an exception was

java.lang.IllegalStateException: No hardfork found for predicate org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.engine.EngineGetPayloadV3$$Lambda$840/0x00000008010a4838@237b2852
	at org.hyperledger.besu.ethereum.mainnet.DefaultProtocolSchedule.lambda$hardforkFor$4(DefaultProtocolSchedule.java:132)
	at java.base/java.util.Optional.orElseThrow(Optional.java:403)
	at org.hyperledger.besu.ethereum.mainnet.DefaultProtocolSchedule.hardforkFor(DefaultProtocolSchedule.java:131)
	at org.hyperledger.besu.consensus.merge.TransitionProtocolSchedule.lambda$hardforkFor$3(TransitionProtocolSchedule.java:210)
	at org.hyperledger.besu.consensus.merge.TransitionUtils.dispatchFunctionAccordingToMergeState(TransitionUtils.java:75)
	at org.hyperledger.besu.consensus.merge.TransitionProtocolSchedule.hardforkFor(TransitionProtocolSchedule.java:209)
	at org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.engine.EngineGetPayloadV3.<init>(EngineGetPayloadV3.java:55)
	at org.hyperledger.besu.ethereum.api.jsonrpc.methods.ExecutionEngineJsonRpcMethods.create(ExecutionEngineJsonRpcMethods.java:157)
	at org.hyperledger.besu.ethereum.api.jsonrpc.methods.ApiGroupJsonRpcMethods.create(ApiGroupJsonRpcMethods.java:30)
	at org.hyperledger.besu.ethereum.api.jsonrpc.methods.JsonRpcMethodsFactory.methods(JsonRpcMethodsFactory.java:144)
	at org.hyperledger.besu.RunnerBuilder.jsonRpcMethods(RunnerBuilder.java:1201)
	at org.hyperledger.besu.RunnerBuilder.build(RunnerBuilder.java:831)
	at org.hyperledger.besu.cli.BesuCommand.synchronize(BesuCommand.java:3086)
	at org.hyperledger.besu.cli.BesuCommand.buildRunner(BesuCommand.java:1725)
	at org.hyperledger.besu.cli.BesuCommand.run(BesuCommand.java:1560)
	at picocli.CommandLine.executeUserObject(CommandLine.java:2026)
	at picocli.CommandLine.access$1500(CommandLine.java:148)
	at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2461)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2453)
	at picocli.CommandLine$RunLast.handle(CommandLine.java:2415)
	at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2273)
	at picocli.CommandLine$RunLast.execute(CommandLine.java:2417)
	at picocli.CommandLine.execute(CommandLine.java:2170)
	at org.hyperledger.besu.cli.util.ConfigOptionSearchAndRunHandler.handle(ConfigOptionSearchAndRunHandler.java:62)
	at org.hyperledger.besu.cli.util.ConfigOptionSearchAndRunHandler.handle(ConfigOptionSearchAndRunHandler.java:33)
	at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2273)
	at picocli.CommandLine$RunLast.execute(CommandLine.java:2417)
	at picocli.CommandLine.execute(CommandLine.java:2170)
	at org.hyperledger.besu.cli.BesuCommand.parse(BesuCommand.java:1717)
	at org.hyperledger.besu.cli.BesuCommand.parse(BesuCommand.java:1512)
	at org.hyperledger.besu.Besu.main(Besu.java:39)

[macfarla]

LGTM