#5888)

Pin the Vue language server to version 3.2.1 to work around a crash
in @vue/language-service where `meta?.props.map(...)` throws a
TypeError when `meta.props` is undefined.

This bug was introduced upstream in vuejs/language-tools#5888 and
affects @vue/language-server versions 3.2.2+.

Upstream issue: vuejs/language-tools#5956
Fixes: zed-extensions#92

Pin the Vue language server to version 3.2.1 to work around a crash
in @vue/language-service where `meta?.props.map(...)` throws a
TypeError when `meta.props` is undefined.

This bug was introduced upstream in vuejs/language-tools#5888 and
affects @vue/language-server versions 3.2.2+.

Upstream issue: vuejs/language-tools#5956
Fixes: zed-extensions#92

## Problem

The Vue language server crashes silently in Zed when providing attribute
completions. The crash originates in `@vue/language-service` at
`vue-template.js:604`, where the code uses:

```js
meta?.props.map(prop => [prop.name, prop]) ?? []
```

This throws a `TypeError: Cannot read properties of undefined (reading
'map')` when `meta` exists but `meta.props` is `undefined`. The safe
form would be `meta?.props?.map(...)`.

This bug was introduced upstream in
[vuejs/language-tools#5888](vuejs/language-tools#5888)
and affects `@vue/language-server` versions **3.2.2+**.

**Upstream issue:** vuejs/language-tools#5956

## Solution

Pin `@vue/language-server` to version **3.2.1** (the last known working
version before the buggy change) instead of dynamically fetching the
latest version via `npm_package_latest_version`.

This is a temporary workaround. Once the upstream package publishes a
fix, the pin should be removed so users can receive future updates.

## Changes

- Added a `PINNED_SERVER_VERSION` constant set to `"3.2.1"` with a
comment explaining the reason and linking to the upstream issue.
- Replaced `zed::npm_package_latest_version(PACKAGE_NAME)?` with
`PINNED_SERVER_VERSION.to_string()` in `server_script_path`.
- Added a `TODO` comment to remove the pin once upstream is fixed.

Fixes #92

Co-authored-by: theiter8r <theiter8r@users.noreply.github.com>