fix: add root types field for legacy module resolution

Allows twoslash on svelte.dev to resolve JSDoc hovers without
needing `moduleResolution: "bundler"` in its compiler options.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jycouet

packages/sv-utils/package.json

@@ -18,6 +18,7 @@
 	"files": [
 		"dist"
 	],
+	"types": "./dist/index.d.mts",
 	"exports": {
 		".": {
 			"types": "./dist/index.d.mts",

packages/sv/package.json

@@ -19,6 +19,7 @@
 		"dist"
 	],
 	"bin": "./dist/bin.mjs",
+	"types": "./dist/src/index.d.mts",
 	"exports": {
 		".": {
 			"types": "./dist/src/index.d.mts",