* feat(WIP): add prop-driven infinite scroll

* feat(WIP): add global toggle for infinite scrolling under settings

* feat: integrate newly added scroll-mode selection state with backend for persists across refreshes

* fix: default to infinite scrolling over load more button & remove redundant setting option

* fix: rectify linting issues

* Update web/src/components/PagedMemoList/PagedMemoList.tsx

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Co-authored-by: Johnny <yourselfhosted@gmail.com>