Cannot use the <...> notation to typecast when using lang="ts"

[dummdidumm]

Describe the bug
One cannot use the <...> notation to typecast when using lang="ts". Because we transform the code to TSX, we get a "JSX element '...' has no corresponding closing tag." error.

To Reproduce

<script lang="ts">
    const blubb = <any>null;
</script>

Expected behavior
We should modify the code in a way that this works (maybe using MagicString.move to transform it to as syntax).

System (please complete the following information):

• OS: Windows
• IDE: VSCode
• Plugin/Package: Svelte for VSCode", svelte2tsx

Additional context
Noone brought this up yet so it does not seem that much of an issue.