docs: add logForwardedEvents to api.md

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mws19901118

src/integration/api.md

@@ -28,6 +28,7 @@ export interface PartytownConfig {
     lib?: string;
     loadScriptsOnMainThread?: (string | RegExp)[];
     logCalls?: boolean;
+    logForwardedEvents?: boolean;
     logGetters?: boolean;
     logImageRequests?: boolean;
     logMainAccess?: boolean;