chore(js-ts): Convert TabCountIcon, NetworkMainAssetLogo to TypeScript

[devin-ai-integration]

Summary

Part of Workstream 2 (Base & UI component JS→TS migration). Converts two Redux-connected UI components from JS to TS. connect() HOCs are kept (not converted to hooks); type-only changes — snapshots identical.

• app/components/UI/Tabs/TabCountIcon/index.js → .tsx
• app/components/UI/NetworkMainAssetLogo/index.js → .tsx

Worth knowing (rest is mechanical PropTypes→interface):

• Both type mapStateToProps = (state: RootState) => ... (RootState from app/reducers), following the existing convention in AccountFromToInfoCard.tsx.
• TabCountIcon is a class component using ThemeContext; keeps static contextType = ThemeContext and reads colors via (this.context as unknown as Theme).colors || mockTheme.colors — the established pattern in already-converted class components (e.g. Views/PickComponent).
• NetworkMainAssetLogo passes its style into TokenIcon, which is still JS and infers style: object from its PropTypes. The prop is typed idiomatically as StyleProp<ViewStyle> and cast to ViewStyle only at the TokenIcon (untyped-JS) call boundary; the cast disappears once TokenIcon is itself converted.

Validation (local)

• yarn lint:tsc: passes, 0 errors.
• eslint on both files: clean (no any).
• yarn jest (TabCountIcon, NetworkMainAssetLogo): 2 suites pass, 2 snapshots identical.

CI note

The install-gated CI jobs on this fork fail before reaching any TS/test step due to a preexisting broken dependency (react-native-tcp pins a GitHub commit that now 404s on yarn install); check-diff/CLABot/label checks also fail on all fork PRs for preexisting infra/governance reasons (ruby/setup-ruby detects the macOS runner as self-hosted). None are caused by this diff, which contains only file renames + type annotations and no lockfile change.

Link to Devin session: https://app.devin.ai/sessions/a0f7f796d1fb45e88b2feabe5829a4ac
Requested by: @WesternConcrete

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