Team C general bugfixes and QOL improvements

[CatboardBox]

Description

This PR fixes a bunch of bugs and a number of QOL improvements.

The complete list of bug fixes are as follows:

• Logout - logging out requires users to login back twice
• ImageForm - images can no longer be uploaded multiple times.
• CardBackground - the classNames prop now overwrites correctly

The complete list of QOL improvements are as follows:

• Advertisement - added a blur to the back of the advertisements
• AnimatedCarousel - made size of lozenges larger for easier clicking
• product/[id] - when image is clicked, a modal popup will appear with the full image (COMMENTED OUT)

Types of Changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] Issue fix (non-breaking change that addresses existing opened issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Refactoring change (refactoring change must not apply any form of functional change)

Fixes

NA

Notion Task Coverage

NA

Checklist

• [x] Related issues linked using fixes #number. / There is no issue fix.
• [x] Unit tests or E2E tests added for any new feature changes. / There is no new feature that requires test.
• [x] Ensured that there's no linter errors.
• [x] Ran the full set of testings and coverage reports exceed 80%. / There is currently no test.
• [x] All Merge Conflicts have been fully resolved.
• [x] Branch is rebased off the target branch.
• [x] This PR is complete and does not have incomplete work that'll break the application.

[notlega]

Closing PR for now as more changes are incoming. Will reopen when finalised.