feat: add default height for Repl component

[zqran]

When using the Repl component as a third-party package, it does not have a default height, so it will cause nothing to be seen in the left editor:

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If this is adopted, we also need to update the default style of sfc-playground in vue/core. ( related to: vuejs/core#8628 )

[sxzz]

But not all apps need put it in whole screen, like Vue docs

[zqran]

Yes, maybe 100vh is not a good default value, but Repl should have a default to ensure usability.

In my opinion, when using Repl, it usually has a larger page ratio, so I set 100vh as the default value for it.

[sxzz]

For general usage, I think we can pass the style directly, instead of a default height.

<Repl style="height: 100vh" />

[zqran]

This is fine, but it's like having an Input component, which is invisible by default and must be set to a height before it can be used. Will this be a little troublesome?

However, there is corresponding sample code in the documentation, so it should be fine.

[sxzz]

Maybe we can add width: 100% to fit the parent container.

[zqran]

Maybe we can add width: 100% to fit the parent container.

Did you mean height: 100% ?