Rollout passChildrenWhenCloningPersistedNodes flag

[javache]

Summary

passChildrenWhenCloningPersistedNodes was evaluated internally at Meta and all known regressions have been resolved. This is a valuable performance improvement for React Native performance and it should be rolled out everywhere.

This change does not have user-visible behaviour, it just affects how Fabric keeps track of the ShadowTree internally.

How did you test this change?

Unit tests updated

[react-sizebot]

Comparing: 3e20dc8...b388122

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	=	530.18 kB	530.18 kB	=	93.39 kB	93.39 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	+0.05%	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	655.81 kB	655.81 kB	=	115.30 kB	115.30 kB
facebook-www/ReactDOM-prod.classic.js	=	675.58 kB	675.58 kB	=	118.54 kB	118.54 kB
facebook-www/ReactDOM-prod.modern.js	=	666.00 kB	666.00 kB	=	116.86 kB	116.87 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
react-native/implementations/ReactFabric-dev.js	+0.21%	647.03 kB	648.39 kB	+0.07%	104.97 kB	105.04 kB
react-native/implementations/ReactFabric-prod.fb.js	=	381.54 kB	380.70 kB	=	65.95 kB	65.80 kB

Generated by 🚫 dangerJS against b388122