fix(build.config): disable mkdist addRelativeDeclarationExtensions option

build.config.ts

@@ -3,5 +3,10 @@ import { defineBuildConfig } from 'unbuild'
 export default defineBuildConfig({
   replace: {
     'process.env.DEV': 'false'
+  },
+  hooks: {
+    'mkdist:entry:options'(ctx, entry, options) {
+      options.addRelativeDeclarationExtensions = false
+    }
   }
 })