Back out #28476 and #28458

[kassens]

www had to revert the flag. We might need to wait on this until that is sorted out.

Back out "Move Hydration Warnings from the DOM Config into the Fiber reconciliation (#28476)"
Original commit changeset: 4b8dfd6

Back out "Remove enableClientRenderFallbackOnTextMismatch flag (#28458)"
Original commit changeset: 84c84d7

[react-sizebot]

Comparing: 4b8dfd6...0f3b777

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.min.js	+0.01%	175.92 kB	175.94 kB	=	54.70 kB	54.54 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js	+0.01%	172.41 kB	172.42 kB	=	53.84 kB	53.72 kB
facebook-www/ReactDOM-prod.classic.js	+0.18%	589.78 kB	590.84 kB	=	103.78 kB	103.76 kB
facebook-www/ReactDOM-prod.modern.js	+0.19%	573.30 kB	574.36 kB	=	100.82 kB	100.83 kB
test_utils/ReactAllWarnings.js	Deleted	65.27 kB	0.00 kB	Deleted	16.17 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
oss-experimental/react-reconciler/cjs/react-reconciler.production.min.js	+0.55%	112.51 kB	113.13 kB	+0.25%	35.00 kB	35.09 kB
oss-stable-semver/react-reconciler/cjs/react-reconciler.production.min.js	+0.54%	114.25 kB	114.87 kB	+0.32%	35.40 kB	35.51 kB
oss-stable/react-reconciler/cjs/react-reconciler.production.min.js	+0.54%	114.28 kB	114.90 kB	+0.31%	35.43 kB	35.54 kB
oss-experimental/react-reconciler/cjs/react-reconciler.profiling.min.js	+0.51%	121.55 kB	122.17 kB	+0.26%	37.34 kB	37.43 kB
oss-stable-semver/react-reconciler/cjs/react-reconciler.profiling.min.js	+0.50%	123.30 kB	123.92 kB	+0.28%	37.75 kB	37.86 kB
oss-stable/react-reconciler/cjs/react-reconciler.profiling.min.js	+0.50%	123.33 kB	123.94 kB	+0.29%	37.77 kB	37.88 kB
facebook-www/ReactDOMTesting-dev.classic.js	=	1,679.34 kB	1,675.77 kB	=	333.39 kB	332.91 kB
facebook-www/ReactDOM-dev.classic.js	=	1,657.82 kB	1,654.25 kB	=	328.84 kB	328.37 kB
facebook-www/ReactDOMTesting-dev.modern.js	=	1,649.43 kB	1,645.87 kB	=	328.00 kB	327.48 kB
facebook-www/ReactDOM-dev.modern.js	=	1,627.96 kB	1,624.40 kB	=	323.48 kB	322.96 kB
oss-stable/react-reconciler/cjs/react-reconciler.development.js	=	925.53 kB	923.43 kB	=	197.85 kB	197.24 kB
oss-stable-semver/react-reconciler/cjs/react-reconciler.development.js	=	925.51 kB	923.40 kB	=	197.83 kB	197.22 kB
oss-experimental/react-reconciler/cjs/react-reconciler.development.js	=	921.72 kB	919.61 kB	=	197.02 kB	196.42 kB
oss-stable/react-dom/umd/react-dom.development.js	=	1,381.02 kB	1,377.20 kB	=	293.25 kB	292.48 kB
oss-stable-semver/react-dom/umd/react-dom.development.js	=	1,381.00 kB	1,377.17 kB	=	293.22 kB	292.45 kB
oss-stable/react-dom/cjs/react-dom.development.js	=	1,317.53 kB	1,313.82 kB	=	290.26 kB	289.48 kB
oss-stable-semver/react-dom/cjs/react-dom.development.js	=	1,317.50 kB	1,313.80 kB	=	290.22 kB	289.44 kB
oss-experimental/react-dom/umd/react-dom.development.js	=	1,371.90 kB	1,368.02 kB	=	291.68 kB	290.91 kB
oss-experimental/react-dom/cjs/react-dom-unstable_testing.development.js	=	1,326.45 kB	1,322.70 kB	=	292.94 kB	292.20 kB
oss-experimental/react-dom/cjs/react-dom.development.js	=	1,308.66 kB	1,304.90 kB	=	288.71 kB	287.92 kB
test_utils/ReactAllWarnings.js	Deleted	65.27 kB	0.00 kB	Deleted	16.17 kB	0.00 kB

Generated by 🚫 dangerJS against 0f3b777

[rickhanlonii]

I think this is replaced by #28655, which basically adds the flag back, but allows us to get the added benefits of the hydration diffs to debug more issues