feat(oas-to-har): add check to preserve empty arrays

[eaglethrost]

🚥 Resolves ISSUE_ID

🧰 Changes

This PR is part of the work for the readme ticket CX-1511 Add support for allowEmptyValue and should get merged ONLY after the changes in the remove-undefined-objects repo because it uses the preserveEmptyArray option which don't exist yet

Focusing in the oas-to-har package:

• Added hasEmptyArrayDefault function to check if a schema contains any properties that has default empty array
• Pass in preserveEmptyArray option to removeUndefinedObjects so that empty arrays are not removed

TODO Before Merging:

• Update the remove-undefined-object package version once the corresponding PR there is shipped

🧬 QA & Testing

• Create an oas endpoint that has nested array properties in which the default value is an empty array in the request body and is required. Don't pass in any data for the attribute. The HAR output should contain an empty array for the attribute
• Using the same endpoint, now pass in an empty array data for the attribute. The HAR output should contain an empty array for the attribute