EPMRPP-96118 || Show button is disabled for Nested step

[maria-hambardzumian]

PR Checklist

• [x] Have you verified that the PR is pointing to the correct target branch? (develop for features/bugfixes, other if mentioned in the task)
• [x] Have you verified that your branch is consistent with the target branch and has no conflicts? (if not, make a rebase under the target branch)
• [x] Have you checked that everything works within the branch according to the task description and tested it locally?
• [x] Have you run the linter (npm run lint) prior to submission? Enable the git hook on commit in your IDE to run it and format the code automatically.
• [x] Have you run the tests locally and added/updated them if needed?
• [x] Have you checked that app can be built (npm run build)?
• [x] Have you made sure that all the necessary pipelines has been successfully completed?
• [x] If the task requires translations to be updated, have you done this by running the manage:translations script?

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