test: x/accounts systemtests (backport #22320)

[mergify]

Description

Closes: #21954

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Summary by CodeRabbit

• New Features

  • Introduced a new test for account migration, enhancing coverage of account functionalities.
  • Added a method to retrieve public keys based on custom fields in the CLI.
  • Expanded dependency injection capabilities for account management in the command execution.

• Bug Fixes

  • Improved clarity and robustness in account initialization and migration processes.
  • Enhanced error handling for account-related operations.

• Documentation

  • Updated method signatures for better understanding and usage in the account module.

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This is an automatic backport of pull request #22320 done by [Mergify](https://mergify.com).

[sontrinh16]

hmmm system test is failling for real i think

[sontrinh16]

hmmm system test is failling for real i think

strange, works on my local machine

[julienrbrt]

hmmm system test is failling for real i think

strange, works on my local machine

yes, it's chain upgrade (TestChainUpgrade) which is tracked here: #22146