Style: Fix move cursors that should be grabs (#5989)

## Summary

Align with designs that use `grab`/`grabbing` instead of `move`.

## Review Focus

Additionally
- Fixes the use of `@apply` in the places I touched
- Removed some `style.css` rules that were always overridden by the
component

## Screenshots

### Before 


https://github.com/user-attachments/assets/9ca65b92-33e5-4feb-853c-9c5ece574ab5


### After


https://github.com/user-attachments/assets/51569025-0156-473e-be93-5662c345901b



┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5989-Style-Fix-move-cursors-that-should-be-grabs-2876d73d3650813bbe95c761c5d46e03)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/components/NodeHeader.vue

@@ -6,7 +6,7 @@
     v-else
     :class="
       cn(
-        'lg-node-header p-4 rounded-t-2xl cursor-move w-full bg-node-component-header-surface text-node-component-header',
+        'lg-node-header p-4 rounded-t-2xl w-full bg-node-component-header-surface text-node-component-header',
         collapsed && 'rounded-2xl'
       )
     "