fix(web): 允许UI扩展内部页面自定义iframe的高度

[tongchong]

允许UI扩展内部页面自定义iframe的高度

参考https://github.com/PKUHPC/scow-ui-extension-demo/pull/2 ，在拓展页面增加代码后，后效果如下：

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: db529f97f71c13955bfda26f3aa7333044e76fc3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

| Name | Type | | ------------------- | ----- | | @scow/lib-web | Patch | | @scow/ai | Patch | | @scow/mis-web | Patch | | @scow/portal-web | Patch | | @scow/auth | Patch | | @scow/gateway | Patch | | @scow/mis-server | Patch | | @scow/portal-server | Patch | | @scow/cli | Patch |

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[github-actions[bot]]

PR Preview Action v1.4.7 :---: :rocket: Deployed preview to https://PKUHPC.github.io/SCOW/pr-preview/pr-1341/ on branch gh-pages at 2024-07-08 12:36 UTC

[ddadaal]

重新修改了一下SCOW侧和extension侧的实现，再看一下