Update Gross Monthly Income Multiple Response Pattern

[ToddWebDev]

Summary

Implement the Multiple Page Response pattern on the Pension Benefits form (21P-527EZ) for gross monthly input.

Description

Replace the single-page multiple response gross monthly input pages with the Array Builder Pattern (Multiple Page list & loop) pattern and Design reference

Acceptance Criteria

• Implement the multi-page response pattern for entering gross monthly input details in the 'Financial information' section of the 21P-527EZ form
• Ensure the multi-page response pattern is only displayed when the 'pension_multiple_page_responses' is enabled
• Ensure the single-page response pattern is not displayed when the 'pension_multiple_page_responses' is enabled

Definition of Done

• [ ] Existing unit and E2E tests pass
• [ ] Items are added, edited and deleted via the multiple page list loop pattern
• [ ] Verify that the UI matches the design system designs
• [ ] Verify the layout on desktop and mobile viewports
• [ ] Verify that the form data is saved to the api and redux store

[gmaciolek]

@ToddWebDev I'm still seeing the single-page response pattern on staging for gross monthly income.

[ToddWebDev]

@gmaciolek This work is still in code review. Hopefully it's approved soon and then it will be added to stage for review. I will let you know when it is on stage.

[ToddWebDev]

@gmaciolek This work is now on stage for design review