[pack/vue] disable semanticTokens for vtsls with .vue files

### Is your feature related to a problem?

there were some changes in the vue.js language tools wiki entry for [Neovim](https://github.com/vuejs/language-tools/wiki/Neovim)
seems like `vue_ls`/`volar` is now handling semantic tokens instead of `vtsls`, the semantic token capability of `vtsls` should be disabled for single file components (`.vue` files) inside `on_attach`

### Describe the new feature

See [Neovim#custom-component-highlight](https://github.com/vuejs/language-tools/wiki/Neovim#custom-component-highlight) for details

### Additional context

_No response_

Locate the pack/vue configuration and its on_attach handler, then compare the linked Vue language-tools guidance for Neovim. Confirm how semantic tokens are currently exposed for vtsls and .vue files; done means the vtsls capability is disabled for those files without affecting other file types.

Written by the indexing model from the issue text.