JSDoc type cast parens are removed

[Rich-Harris]

When using JSDoc, it's common to do this sort of thing:

const x = /** @type {Foo} */ (a.b).c();

This tells TypeScript that a.b is of type Foo. Prettier will preserve those parentheses when processing JS files, but for whatever reason it fails to do so inside .svelte files, instead turning it into this:

const x = /** @type {Foo} */ a.b.c();

[dummdidumm]

This is a tricky one .. Prettier's JS printer/parser respects that parentheses. We use the typescript parser though for the script tags, which does not preserve these, because in a TS file these JSDoc hints don't have meaning. So we probably need to switch the parser according to the script language.