Doesn't render if DescItem#show is set as "() => false"

[JohnNiang]

Subject of the issue

Doesn't render if DescItem#show is set as () => false. And raise errors and warnings as below:

runtime.js:268 Uncaught (in promise) TypeError: Cannot read property 'type' of null
    at isEmptyElement (runtime.js:268)
    at runtime.js:293
    at Array.filter (<anonymous>)
    at filterEmpty (runtime.js:291)
    at getRows (index.js:22)
    at Proxy.<anonymous> (warning.js:1)
    at renderComponentRoot (reactivity.esm-bundler.js:630)
    at componentEffect (runtime-core.esm-bundler.js:4974)
    at reactiveEffect (shared.esm-bundler.js:161)
    at effect (shared.esm-bundler.js:27)

Your environment

• OS: 5.10.7-3-MANJARO
• Packages: 2.0.0-rc.18
• Env: node v14.15.4

Steps to reproduce

Tell us how to reproduce this issue. Please provide a working and simplified example.

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• useDescription
• setSchema

      const [register] = useDescription({
        column: 2,
        schema: [ {
            field: 'test',
            label: 'test',
            show: () => false,
          },
        ]
      });

Expected behaviour

What should happen?

Nothing to show.

Actual behaviour

What happens instead?

Prevent other components from rendering due to errors.