Support magic-move between twoslash code snippets

[nirtamir2]

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I want to support magic-move between twoslash code snippets

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/````md magic-move

/```ts twoslash
const a:number = 5
/```

/```ts twoslash
const a:number = 6
/```

/````

This does not show magic move or twoslash syntax

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Not using twoslash, and create a new slide with transition: view-transition to identical slide with twoslash syntax.