Ensure Performance Track are Clamped and Don't overlap (#34509)

This simplifies the logic for clamping the start times of various
phases. Instead of checking in multiple places I ensure we compute a
value for each phase that is then clamped to the next phase so they
don't overlap. If they're zero they're not printed.

I also added a name for all the anonymous labels. Those are mainly
fillers for sync work that should be quick but it helps debugging if we
can name them.

Finally the real fix is to update the clamp time which previously could
lead to overlapping entries for consecutive updates when a previous
update never finalized before the next update.

DiffTrain build for [e3c9656](e3c9656)

Author: sebmarkbage

compiled/facebook-www/REVISION

@@ -1 +1 @@
-78997291302c42b788dafa4c12da246e44be2dda
+e3c9656d20618ed321aea85cb3d844cbd1dce078

compiled/facebook-www/REVISION_TRANSFORMS

@@ -1 +1 @@
-78997291302c42b788dafa4c12da246e44be2dda
+e3c9656d20618ed321aea85cb3d844cbd1dce078

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

@@ -1419,7 +1419,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-classic-78997291-20250916";
+    exports.version = "19.2.0-www-classic-e3c9656d-20250917";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -1419,7 +1419,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-modern-78997291-20250916";
+    exports.version = "19.2.0-www-modern-e3c9656d-20250917";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -602,4 +602,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-78997291-20250916";
+exports.version = "19.2.0-www-classic-e3c9656d-20250917";

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

@@ -602,4 +602,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-78997291-20250916";
+exports.version = "19.2.0-www-modern-e3c9656d-20250917";

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

@@ -606,7 +606,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-78997291-20250916";
+exports.version = "19.2.0-www-classic-e3c9656d-20250917";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -606,7 +606,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-78997291-20250916";
+exports.version = "19.2.0-www-modern-e3c9656d-20250917";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&