FIO-4871 fixed calculated value issues

[roma-formio]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-4871

Description

In this PR fixes for several issues:

1. DataGrid with the 'Initialize Empty' setting doesn't add calculated rows to the form so DataGrid is always empty.
2. Only the first component inside NestedComponent can recalculate value.
3. DataGrid can restore calculations after values have been changed manually by resetting values to the previous calculated value.
4. EditGrid trigger calculate value in builder mode.

How has this PR been tested?

Unit testing, manual testing.

Checklist:

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