CLI options tests - check error first; fix typo rpl

[macfarla]

PR description

Related to #8662 - if the besu command errors, the commandOutput is empty, and if that's checked first, you don't see what the error is. with the order reversed, if there's an error, it will be visible.

Think it only affects tests that are asserting something specific about the commandOutput so I updated all those spots

eg

checking the commandOutput first you'd get

Expecting actual:
  ""
to start with:
  "Unstable options"

whereas if you check the error first, you get

Expecting empty but was: "picocli.CommandLine$DuplicateOptionAnnotationsException: Option name '--Xbonsai-full-flat-db-enabled' is used by both field Boolean org.hyperledger.besu.cli.options.storage.PathBasedExtraStorageOptions$Unstable.fullFlatDbEnabled and field Boolean org.hyperledger.besu.cli.options.storage.PathBasedExtraStorageOptions$Unstable.fullFlatDbEnabled
"
java.lang.AssertionError: 
Expecting empty but was: "picocli.CommandLine$DuplicateOptionAnnotationsException: Option name '--Xbonsai-full-flat-db-enabled' is used by both field Boolean org.hyperledger.besu.cli.options.storage.PathBasedExtraStorageOptions$Unstable.fullFlatDbEnabled and field Boolean org.hyperledger.besu.cli.options.storage.PathBasedExtraStorageOptions$Unstable.fullFlatDbEnabled
"

Also fixed a typo RPL/RLP

Fixed Issue(s)

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[pinges]

LGTM