fix(client/v2/autocli): prevent duplicate addition of customCommands (backport #22576)

[mergify]

Description

Closes cosmos/gaia#3412

Not every module's custom commands are prefixed by the name of the module. Because of how Gaia bootstraps its tx command, autocli can end up adding duplicate commands if it's only checking whether there's already a command with the module's name added to the CLI. This PR fixes this by adding a second check to autocli's enhanceCommandCommon.

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Summary by CodeRabbit

• New Features

  • Support for off-chain signing and verification of files.
  • Introduction of governance proposals.
  • Launch of a transaction factory.
  • Extended keyring interface with new types.
  • Custom broadcast logic added.

• Improvements

  • Enhanced error messaging with possible enum values displayed.
  • Keyring flags added in query commands.

• Bug Fixes

  • Resolved issues with unmarshalling in transactions.
  • Fixed duplicate command additions in the command interface.

• Breaking Changes

  • Removed address codecs from specific options, shifting to context-based codecs.

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This is an automatic backport of pull request #22576 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 685218e has failed:

On branch mergify/bp/release/v0.50.x/pr-22576
Your branch is up to date with 'origin/release/v0.50.x'.

You are currently cherry-picking commit 685218e53.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   client/v2/autocli/common.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   client/v2/CHANGELOG.md

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[julienrbrt]

will fix and prepare for release

[julienrbrt]

Tagged: https://github.com/cosmos/cosmos-sdk/releases/tag/client%2Fv2.0.0-beta.6