fix(react-virtualized): exclude examples from coverage

[riceharvest]

Summary

• Excludes react-virtualized example, demo, SSR, e2e, setup, and vendor files from V8 coverage collection
• Adds a regression check so coverage config stays focused on runtime sources
• Removes the noisy Rollup parse warnings from react-virtualized coverage runs

Tests

• corepack pnpm@9.6.0 --filter @opensourceframework/react-virtualized test
• corepack pnpm@9.6.0 --filter @opensourceframework/react-virtualized test:coverage (PARSE_WARNING_COUNT=0)
• corepack pnpm@9.6.0 --filter @opensourceframework/react-virtualized lint
• corepack pnpm@9.6.0 --filter @opensourceframework/react-virtualized typecheck
• git diff --check

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep vendored runtime modules in coverage

When coverage is run, this pattern drops all source-stripped/vendor modules even though they are part of the shipped runtime path: AutoSizer.jsx and WindowScroller.jsx import vendor/detectElementResize, and Masonry/PositionCache.jsx imports vendor/intervalTree which imports binarySearchBounds. Since coverage.include is source-stripped/**, this exclusion hides real runtime code from the coverage result rather than just examples/tests, so coverage can pass while missing exercised package behavior.

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