Fixes filtering functionality that was broken due to improper use of
useMemo with MobX observables. The issue occurred because useMemo's
dependency array uses reference equality, but MobX observable arrays
are mutated in place (reference doesn't change when items are added/removed).

Changes:
- Remove useMemo from filter computation in Home, UserProfile, and Archived pages
- Calculate filters directly in render since components are already MobX observers
- Fix typo: memoFitler -> memoFilter in Archived.tsx

This ensures filters are recalculated whenever memoFilterStore.filters changes,
making tag clicks and other filter interactions work correctly.

Fixes #5189

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Co-Authored-By: Claude <noreply@anthropic.com>