V8.7.0

Release 339

Bug Fixes

• [#11541] Feedback response submission: Requests sent to backend despite invalid response (@zhaojj2209)
• [#11538] Instructor audit logs: ensure end date is not before start date (@sshamouilian)
• [#11518] Submission status stays as pending for team submissions (@shadowezz)
• [#11521] Distribute points among options question: negative points allowed on frontend (@zhaojj2209)

New Features and Enhancements

• [#11488] Allow access to submission/results page for unregistered instructors (@wkurniawan07)
• [#11396] Instructor sample data: defer until instructor joins (@samuelfangjw)
• [#11519] Make rank and constsum style consistent (@fsgmhoward)

Other Tasks

• [#11558] Fix unstable E2E tests (@wkurniawan07)