chore: Fix --version flag in subcommands

[usmansaleem]

PR Description

Fix --version flag in subcommands

Fixed Issue(s)

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

Testing

• I thought about testing these changes in a realistic/non-local environment.

---

Note

Ensures --version works consistently on root and subcommands.

• Add versionProvider = VersionProvider.class to Eth1SubCommand, Eth2SubCommand, Eth2ExportSubCommand, Eth2ImportSubCommand, and Eth2WatermarkRepairSubCommand
• Update and rename test to CommandLineParserHelpAndVersionUsageTest, asserting version output for main command and eth1/eth2 subcommands

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