Fix ESLint errors causing CI failure

[Copilot]

CI failing with 34 ESLint errors across TypeScript strict rules and React hooks violations.

Changes

React Hooks Violations

• react-hooks/refs: Removed ref forwarding in Hidden.tsx (MuiHidden doesn't support refs), used existing anchorEl state in TypingFilter instead of accessing ref.current during render
• react-hooks/set-state-in-effect: Replaced useEffect + setState pattern with derived state using nullish coalescing (userToggleValue ?? defaultValue) in ChallengesSection and LearningSection
• react-hooks/static-components: Moved component definitions (ClassIcon, SvgComponent, ResourceProgress) outside parent render functions to prevent recreation on each render

TypeScript Errors

• Replaced as any with as unknown as Type for type assertions
• Converted condition && fn() expressions to condition ? fn() : undefined or if (condition) fn() to satisfy no-unused-expressions
• Removed or prefixed unused catch variables

Code Quality

• Used finally block in PersistedStateProvider to eliminate duplicate setLoading(false) calls
• Extracted inline intersection type to named interface ResourceProgressWithChartProps

// Before: setState in effect causes cascading renders
useEffect(() => {
  if (autoUpdate) {
    setOpenChallenges(hasChallenges);
  }
}, [hasChallenges, autoUpdate]);

// After: derived state with nullish coalescing
const openChallenges = userToggleValue ?? hasChallenges;

Original prompt

Fix this error - https://github.com/layer5io/sistent/actions/runs/21053568182/job/60544875274?pr=1225

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