FIO-8360 fixed submission state for nested form

[HannaKurban]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-8360

Description

Fixed an issue when a nested form was saved as a draft after submitting the main form

Dependencies

n/a

How has this PR been tested?

Automated tests have been added

Checklist:

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• My changes include tests that prove my fix is effective (or that my feature works as intended)
• New and existing unit/integration tests pass locally with my changes
• Any dependent changes have corresponding PRs that are listed above