Schedule prerender after something suspends (#30800)

Adds the concept of a "prerender". These special renders are spawned whenever something suspends (and we're not already prerendering). The purpose is to move speculative rendering work into a separate phase that does not block the UI from updating. For example, during a transition, if something suspends, we should not speculatively prerender siblings that will be replaced by a fallback in the UI until *after* the fallback has been shown to the user. DiffTrain build for [e10e868](e10e868)
facebook · Sep 4, 2024 · 58fa44d · 58fa44d
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diff --git a/compiled/facebook-www/REVISION b/compiled/facebook-www/REVISION
@@ -1 +1 @@
-8b4c54c00f5c047a72a4cecc2689196786c3e5ff
+e10e8681824e56c10fdb14e0359d878bcd748937
diff --git a/compiled/facebook-www/REVISION_TRANSFORMS b/compiled/facebook-www/REVISION_TRANSFORMS
@@ -1 +1 @@
-8b4c54c00f5c047a72a4cecc2689196786c3e5ff
+e10e8681824e56c10fdb14e0359d878bcd748937
diff --git a/compiled/facebook-www/React-dev.classic.js b/compiled/facebook-www/React-dev.classic.js
@@ -2001,7 +2001,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.0.0-www-classic-8b4c54c0-20240904";
+    exports.version = "19.0.0-www-classic-e10e8681-20240904";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

diff --git a/compiled/facebook-www/React-dev.modern.js b/compiled/facebook-www/React-dev.modern.js
@@ -1981,7 +1981,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.0.0-www-modern-8b4c54c0-20240904";
+    exports.version = "19.0.0-www-modern-e10e8681-20240904";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

diff --git a/compiled/facebook-www/React-prod.classic.js b/compiled/facebook-www/React-prod.classic.js
@@ -665,4 +665,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-www-classic-8b4c54c0-20240904";
+exports.version = "19.0.0-www-classic-e10e8681-20240904";
diff --git a/compiled/facebook-www/React-prod.modern.js b/compiled/facebook-www/React-prod.modern.js
@@ -665,4 +665,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-www-modern-8b4c54c0-20240904";
+exports.version = "19.0.0-www-modern-e10e8681-20240904";
diff --git a/compiled/facebook-www/React-profiling.classic.js b/compiled/facebook-www/React-profiling.classic.js
@@ -669,7 +669,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-www-classic-8b4c54c0-20240904";
+exports.version = "19.0.0-www-classic-e10e8681-20240904";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

diff --git a/compiled/facebook-www/React-profiling.modern.js b/compiled/facebook-www/React-profiling.modern.js
@@ -669,7 +669,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-www-modern-8b4c54c0-20240904";
+exports.version = "19.0.0-www-modern-e10e8681-20240904";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&