fix(test): exclude vitest-dev LICENSE.md from bundle

vitest-dev ships LICENSE.md which bundleVitest() copies into the package
directory. npm auto-includes any LICENSE* file, so the published package
ends up with both LICENSE (our merged one) and LICENSE.md (vitest's).
Exclude it since our generateLicenseFile already produces the correct
merged LICENSE.

Author: fengmk2

packages/test/build.ts

@@ -444,6 +444,7 @@ async function bundleVitest() {
       join(vitestSourceDir, 'node_modules/**'),
       join(vitestSourceDir, 'package.json'),
       join(vitestSourceDir, 'README.md'),
+      join(vitestSourceDir, 'LICENSE.md'),
     ],
   });