test(react): update `playground/react-emotion` to tsx and remove `playground/tsconfig`#737

hi-ogawa merged 2 commits intomainvitejs/vite-plugin-react:mainfrom

08-19-test_react_update_playground_react-emotion_to_tsx_and_remove_playground_tsconfig_vitejs/vite-plugin-react:08-19-test_react_update_playground_react-emotion_to_tsx_and_remove_playground_tsconfig_Copy head branch name to clipboard