## What is this PR for?
Disable `preview` in `fzf-lua` Extra for `vtsls`. I tested it with
Python and Typescript Extras and in Typescript pressing `<leader>ca`
shows without previewer, while in Python the same shows with previewer.
Kindly check also that this is correct and I didn't miss out anything
else.
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## Does this PR fix an existing issue?
Fixes#3773
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## Checklist
- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.