refactor(router-core): rework the conditions under which a beforeLoad is executed or skipped

packages/router-core/tests/load.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, test, vi } from 'vitest'
+import { BaseRootRoute, BaseRoute, RouterCore } from '../src'
+
+describe('beforeLoad skip or exec', () => {
+  test('current behavior', async () => {
+    const rootRoute = new BaseRootRoute({})
+    const beforeLoad = vi.fn(
+      () => new Promise((resolve) => setTimeout(resolve, 100)),
+    )
+    const fooRoute = new BaseRoute({
+      getParentRoute: () => rootRoute,
+      path: '/foo',
+      beforeLoad,
+    })
+    const routeTree = rootRoute.addChildren([fooRoute])
+    const router = new RouterCore({
+      routeTree,
+    })
+    router.preloadRoute({ to: '/foo' })
+    await Promise.resolve()
+    await router.navigate({ to: '/foo' })
+
+    expect(beforeLoad).toHaveBeenCalledTimes(2)
+  })
+})