[ci] Add process_artifacts_combined job

[poteto]

Stack from ghstack (oldest at bottom):

• [RN] Remove __EXPERIMENTAL__ from enableOwnerStacks, enableUseDeferredValueInitialArg #30322
• [ci] Add check_release_dependencies job #30169
• [ci] Add yarn_test_build job to gh actions #30072
• -> [ci] Add process_artifacts_combined job #30073
• [ci] Parallelize yarn build #30071
• [ci] Add yarn build gh action #30070

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
react-compiler-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 12, 2024 3:11pm

[react-sizebot]

Comparing: e6783e7...a667ea2

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	=	6.68 kB	6.68 kB	=	1.83 kB	1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	497.99 kB	497.99 kB	=	89.27 kB	89.27 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	=	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	502.81 kB	502.81 kB	=	89.97 kB	89.97 kB
facebook-www/ReactDOM-prod.classic.js	=	597.08 kB	597.08 kB	=	105.33 kB	105.33 kB
facebook-www/ReactDOM-prod.modern.js	=	571.42 kB	571.42 kB	=	101.27 kB	101.27 kB
test_utils/ReactAllWarnings.js	Deleted	62.88 kB	0.00 kB	Deleted	15.69 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	62.88 kB	0.00 kB	Deleted	15.69 kB	0.00 kB

Generated by 🚫 dangerJS against a667ea2

[poteto]

Note: this used to be a separate job in circleci but it was really unnecessary to spin up a new CI worker just for this. So I merged this step into process artifacts since it's the only job that needs this.