devtools: dont restore profiling data if we're profling (facebook#22753)

Author: eps1lon

packages/react-devtools-extensions/src/main.js

@@ -156,7 +156,9 @@ function createPanelIfReactLoaded() {
           supportsTimeline: isChrome,
           supportsTraceUpdates: true,
         });
-        store.profilerStore.profilingData = profilingData;
+        if (!isProfiling) {
+          store.profilerStore.profilingData = profilingData;
+        }
 
         // Initialize the backend only once the Store has been initialized.
         // Otherwise the Store may miss important initial tree op codes.