Enhance UI for Topics section in Explore page
## Overview - Example: https://gitlab.com/explore/projects/topics/docker <details><summary>Click to expand</summary> ![Screenshot_2025-01-09_at_12.10.57](/uploads/82b31853746477a92777ddedc662c970/Screenshot_2025-01-09_at_12.10.57.png) </details> ### Proposal - Header section | Before | After | | ------ | ------ | | ![before](/uploads/4b04890ac962e044f91e4542bbd7aca0/before.png) | ![after](/uploads/e426998ad0e82d5af39d0f077afe521b/after.png) | - Filter section | Before | After | | ------ | ------ | | ![Screenshot_2025-01-09_at_12.16.05](/uploads/254463b4ff6854a440fe37d746030b2f/Screenshot_2025-01-09_at_12.16.05.png) | ![image](/uploads/d792820b5f4f862e4dfd91709b6b1f46/image.png) | ## Next steps Consider migrating this part with the filtered search component for consistency. https://gitlab.com/gitlab-org/gitlab/-/issues/513632
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