storybook: Fix auto_height_editor story (#27653)

This is a fix for this error when trying to run `auto_height_editor`
story:

```sh
thread 'main' panicked at C:\Users\x\dev\zed\crates\settings\src\settings_store.rs:363:32:
unregistered setting type workspace::workspace_settings::WorkspaceSettings
```

Release Notes:

- N/A

crates/storybook/src/storybook.rs

@@ -19,6 +19,7 @@ use simplelog::SimpleLogger;
 use strum::IntoEnumIterator;
 use theme::{ThemeRegistry, ThemeSettings};
 use ui::prelude::*;
+use workspace;
 
 use crate::app_menus::app_menus;
 use crate::assets::Assets;
@@ -83,6 +84,7 @@ fn main() {
         language::init(cx);
         editor::init(cx);
         Project::init_settings(cx);
+        workspace::init_settings(cx);
         init(cx);
         load_storybook_keymap(cx);
         cx.set_menus(app_menus());