(fix) remove "auto" from draggable

#481

Spec:
The third state is auto; it has no keywords but it is the missing value default and the invalid value default.

Author: dummdidumm

packages/svelte2tsx/svelte-jsx.d.ts

@@ -263,7 +263,7 @@
       dir?: string;
       disabled?: boolean;
       download?: any;
-      draggable?: boolean | "true" | "false" | "auto";
+      draggable?: boolean | "true" | "false";
       enctype?: string;
       for?: string;
       form?: string;