fix: Electron offline transport options (#11230)

Author: timfish

docs/platforms/javascript/guides/electron/index.mdx

@@ -91,10 +91,10 @@ import * as Sentry from "@sentry/electron/main";
 Sentry.init({
   dsn: "___PUBLIC_DSN___",
   transportOptions: {
-    /* The maximum number of days to keep an event in the queue. */
-    maxQueueAgeDays: 30,
-    /* The maximum number of events to keep in the queue. */
-    maxQueueCount: 30,
+    /* The maximum number of days to keep an envelope in the queue. */
+    maxAgeDays: 30,
+    /* The maximum number of envelopes to keep in the queue. */
+    maxQueueSize: 30,
     /**
      * Called before we attempt to send an envelope to Sentry.
      *
@@ -119,6 +119,12 @@ Sentry.init({
      * @returns Whether we should store the envelope in the queue
      */
     shouldStore: (envelope: Envelope, error: Error, retryDelay: number) => boolean | Promise<boolean>;
+    /**
+     * Should the offline store flush shortly after startup.
+     *
+     * Defaults: false
+     */
+    flushAtStartup: false;
   },
 });
 ```