fix: subscript and superscript were mixed up

[LeonMueller-OneAndOnly]

Dear maintainers,

I noticed following bug in the playground demo and provide a small and straight forward fix to it.

The labels were simply mixed up and the clearing behaviour could not handle changing a subscript to a supscript or vice versa.

With best regards,
Leon Müller

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
plate	❌ Failed (Inspect)			May 31, 2024 6:02pm

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[zbeyens]

Thanks! Here is the error:

[LeonMueller-OneAndOnly]

Weird! If have just today forked the playground demo where i use a string array (just like committed here) - in order to clear both marks for subscript and subscript when toggling one.

There typescript allowed a string array and it fixed the issue that you cant switch from subscript to supscript or vice versa.