FIO-9942: assign result value from evaluated function

[Maria-Golomb]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-9942

Fixed an issue where the evaluated function string was not correctly assigning a value to the result variable in the interpreter context.
Now value is then properly assigned to the result property on the global object.

Dependencies

Important to use @formio/js version that uses a version of @formio/core containing the changes:
formio/core#239
formio/core#240

How has this PR been tested?

manually

Checklist:

• I have completed the above PR template
• 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