[ci] Skip yarn install on cache hit

[poteto]

We currently already do this in runtime_build_and_test, we can reuse the same technique in other workflows to speed them up.

[react-sizebot]

Comparing: 313332d...440ba88

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	+0.05%	1.83 kB	1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	514.93 kB	514.93 kB	=	91.73 kB	91.73 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	+0.11%	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	614.48 kB	614.48 kB	=	108.73 kB	108.73 kB
facebook-www/ReactDOM-prod.classic.js	=	646.21 kB	646.21 kB	=	114.22 kB	114.22 kB
facebook-www/ReactDOM-prod.modern.js	=	636.49 kB	636.49 kB	=	112.65 kB	112.65 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 440ba88