Set __sentry_navigation_name_set__

Author: onurtemizkan

packages/react/src/reactrouter-compat-utils/instrumentation.tsx

@@ -89,23 +89,8 @@ function cancelScheduledCallback(id: number): void {
 }
 
 /**
- * Computes a location key that uniquely identifies a navigation including pathname, search, and hash.
- *
- * Normalizes undefined/null search and hash to empty strings to ensure consistency between
- * partial location objects (from <Routes location="/path">) and full location objects
- * (from history state). This prevents duplicate navigation spans when using the location
- * prop with string values (common in modal routes and SSR).
- *
+ * Computes location key for duplicate detection. Normalizes undefined/null to empty strings.
  * Exported for testing.
- *
- * @example
- * // Partial location (from <Routes location="/users">)
- * computeLocationKey({ pathname: '/users', search: undefined, hash: undefined })
- * // Returns: '/users'
- *
- * // Full location (from history)
- * computeLocationKey({ pathname: '/users', search: '', hash: '' })
- * // Returns: '/users' (same key - duplicate detection works correctly)
  */
 export function computeLocationKey(location: Location): string {
   return `${location.pathname}${location.search || ''}${location.hash || ''}`;
@@ -807,6 +792,11 @@ export function handleNavigation(opts: {
         const oldName = trackedNav.routeName;
         trackedNav.span.updateName(name);
         trackedNav.span.setAttribute(SEMANTIC_ATTRIBUTE_SENTRY_SOURCE, source as 'route' | 'url' | 'custom');
+        addNonEnumerableProperty(
+          trackedNav.span as { __sentry_navigation_name_set__?: boolean },
+          '__sentry_navigation_name_set__',
+          true,
+        );
         trackedNav.routeName = name;
         DEBUG_BUILD && debug.log(`[Tracing] Updated navigation span name from "${oldName}" to "${name}"`);
       } else {