[Fizz] Unify preamble only fields to save a field (#35068)

Stacked on #35067.

Same idea of saving a field on the SuspenseBoundary in the common case.
The case where they can have a preamble is rare.

DiffTrain build for [fa50caf](fa50caf)

Author: sebmarkbage

compiled/facebook-www/REVISION

@@ -1 +1 @@
-1e986f514f7fdf73d013bf6595a47dfcb0cf2da7
+fa50caf5f84bb8976aa1dbff7f15a821e44e7af7

compiled/facebook-www/REVISION_TRANSFORMS

@@ -1 +1 @@
-1e986f514f7fdf73d013bf6595a47dfcb0cf2da7
+fa50caf5f84bb8976aa1dbff7f15a821e44e7af7

compiled/facebook-www/React-dev.classic.js

@@ -1499,7 +1499,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.3.0-www-classic-1e986f51-20251107";
+    exports.version = "19.3.0-www-classic-fa50caf5-20251107";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-dev.modern.js

@@ -1499,7 +1499,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.3.0-www-modern-1e986f51-20251107";
+    exports.version = "19.3.0-www-modern-fa50caf5-20251107";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-prod.classic.js

@@ -606,4 +606,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-classic-1e986f51-20251107";
+exports.version = "19.3.0-www-classic-fa50caf5-20251107";

compiled/facebook-www/React-prod.modern.js

@@ -606,4 +606,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-modern-1e986f51-20251107";
+exports.version = "19.3.0-www-modern-fa50caf5-20251107";

compiled/facebook-www/React-profiling.classic.js

@@ -610,7 +610,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-classic-1e986f51-20251107";
+exports.version = "19.3.0-www-classic-fa50caf5-20251107";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-profiling.modern.js

@@ -610,7 +610,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-modern-1e986f51-20251107";
+exports.version = "19.3.0-www-modern-fa50caf5-20251107";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactART-dev.classic.js

@@ -20441,10 +20441,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.3.0-www-classic-1e986f51-20251107",
+        version: "19.3.0-www-classic-fa50caf5-20251107",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.3.0-www-classic-1e986f51-20251107"
+        reconcilerVersion: "19.3.0-www-classic-fa50caf5-20251107"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -20479,7 +20479,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.3.0-www-classic-1e986f51-20251107";
+    exports.version = "19.3.0-www-classic-fa50caf5-20251107";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactART-dev.modern.js

@@ -20212,10 +20212,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.3.0-www-modern-1e986f51-20251107",
+        version: "19.3.0-www-modern-fa50caf5-20251107",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.3.0-www-modern-1e986f51-20251107"
+        reconcilerVersion: "19.3.0-www-modern-fa50caf5-20251107"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -20250,7 +20250,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.3.0-www-modern-1e986f51-20251107";
+    exports.version = "19.3.0-www-modern-fa50caf5-20251107";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&