fix: invalid text node should not render

[pauldambra]

spotted we were rendering the text undefined

the recording in question has an invalid text node - no text property

we have to render the ID in case future mutations affect it - but let's not render the empty text

[github-actions]

Size Change: 0 B

Total Size: 824 kB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	824 kB

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