chore: improve Cloud E2E Test speed (#13103)

Before 11m

![before_wechat_2025-07-09_105625_157](https://github.com/user-attachments/assets/68eb1026-cacd-4d0f-a0b9-e4f76a1df45a)

After 7m

![afterwechat_2025-07-09_110410_383](https://github.com/user-attachments/assets/bc154cfb-88d2-4e25-bfab-bc0ecc0499ce)


#### PR Dependency Tree


* **PR #13103** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Tests**
* Expanded cloud end-to-end test coverage by increasing test shards from
6 to 10 for improved parallelization.
* Added a new suite of end-to-end tests focused on page sharing,
including scenarios for sharing links, table of contents, edgeless mode,
and image previews.
* Removed several redundant or relocated sharing-related tests,
retaining only the reference link verification in the affected suite.
* Updated test output format to use the "list" reporter for clearer test
results.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tests/affine-cloud/package.json

@@ -3,7 +3,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "e2e": "yarn playwright test"
+    "e2e": "yarn playwright test --reporter=list"
   },
   "devDependencies": {
     "@affine-test/kit": "workspace:*",