fix: global sentry middlewares

Author: TkDodo

src/start.ts

@@ -0,0 +1,12 @@
+import {
+  sentryGlobalFunctionMiddleware,
+  sentryGlobalRequestMiddleware,
+} from '@sentry/tanstackstart-react'
+import { createStart } from '@tanstack/react-start'
+
+export const startInstance = createStart(() => {
+  return {
+    requestMiddleware: [sentryGlobalRequestMiddleware],
+    functionMiddleware: [sentryGlobalFunctionMiddleware],
+  }
+})