Install ESLint v9

[eps1lon]

Will be used to test compat with eslint-plugin-react-hooks. Makes for a cleaner diff in #28773

[react-sizebot]

Comparing: 699d03c...8590c49

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.js	=	497.71 kB	497.71 kB	=	88.93 kB	88.93 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	504.00 kB	504.00 kB	=	89.95 kB	89.95 kB
facebook-www/ReactDOM-prod.classic.js	=	591.14 kB	591.14 kB	=	103.91 kB	103.91 kB
facebook-www/ReactDOM-prod.modern.js	=	566.95 kB	566.95 kB	=	100.12 kB	100.12 kB
test_utils/ReactAllWarnings.js	Deleted	64.80 kB	0.00 kB	Deleted	16.14 kB	0.00 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
test_utils/ReactAllWarnings.js	Deleted	64.80 kB	0.00 kB	Deleted	16.14 kB	0.00 kB

Generated by 🚫 dangerJS against 8590c49