fix: add ts-expect-error for invalid trace-mapping type

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>

src/compiler/compile/Component.ts

@@ -1,3 +1,4 @@
+// TODO: remove after https://github.com/jridgewell/trace-mapping/pull/24 has been merged
 // @ts-expect-error Svelte 3's ancient TS version can't look up the types for this package properly yet
 import { TraceMap, originalPositionFor } from '@jridgewell/trace-mapping';
 import { walk } from 'estree-walker';