Moved "types": "./dist/index.d.ts" into package.json (#4)

* Moved "types": "./dist/index.d.ts" into package.json

This solves the error `The 'react-hydration-provider' library may need to update its package.json or typings.`, as explained [here](https://stackoverflow.com/a/76212193).

* Re-added types in package.json

In addition to the key into `exports`, now there's a `"types": "./dist/index.d.ts"` out of it again

package.json

@@ -38,11 +38,12 @@
 	},
 	"exports": {
 		".": {
+			"types": "./dist/index.d.ts",
 			"import": "./entry/index.js",
 			"require": "./entry/index.cjs"
 		}
 	},
-	"types": "dist/index.d.ts",
+	"types": "./dist/index.d.ts",
 	"main": "./entry/index.cjs",
 	"files": [
 		"/entry/",