refactor: improve async content (@miodec)

[Miodec]

No description provided.

[Copilot]

Pull request overview

Refactors AsyncContent to expose query results as Solid accessors instead of raw values, then updates frontend call sites, stories, and tests to use the new reactive API. This fits the frontend’s SolidJS migration by making async content consumption more signal-friendly.

Changes:

• Change AsyncContent child props to pass accessors and add logic to retain the last resolved value during deferred loading.
• Update frontend consumers (AboutPage, LeaderboardPage, ProfilePage, Inbox, VersionHistoryModal) and Storybook stories to call returned accessors.
• Adjust AsyncContent tests to match the new accessor-based API for single and multi-query cases.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
frontend/storybook/stories/AsyncContent.stories.tsx	Updates Storybook examples to read async values via accessors.
frontend/src/ts/components/popups/alerts/Inbox.tsx	Adapts inbox list rendering to the new AsyncContent child API.
frontend/src/ts/components/pages/profile/ProfilePage.tsx	Updates profile rendering to unwrap the async profile accessor.
frontend/src/ts/components/pages/leaderboard/LeaderboardPage.tsx	Refactors leaderboard consumers to read accessor-backed async query results.
frontend/src/ts/components/pages/AboutPage.tsx	Updates stats, charts, supporters, and contributors sections to use accessors.
frontend/src/ts/components/modals/VersionHistoryModal.tsx	Adjusts version history rendering for accessor-based infinite-query data.
frontend/src/ts/components/common/AsyncContent.tsx	Core refactor: accessor-based children plus cached last resolved value and loader behavior changes.
frontend/__tests__/components/common/AsyncContent.spec.tsx	Rewrites tests around the new accessor contract for AsyncContent.