feat(editor): add more open doc options to editor toolbar (#9588)

fix AF-2036, AF-2092

tests/affine-desktop/e2e/split-view.spec.ts

@@ -28,8 +28,8 @@ test('open split view', async ({ page }) => {
   await expect(page.getByTestId('split-view-label')).toHaveCount(2);
   await expectTabTitle(page, 0, ['Untitled', 'hi from another page']);
 
-  // the second split view should be active
-  await expectActiveTab(page, 0, 1);
+  // the first split view should be active
+  await expectActiveTab(page, 0, 0);
 
   // by clicking the first split view label, the first split view should be active
   await page.getByTestId('split-view-label').nth(0).click();