Upgrade lightningcss, disable grid scoping (#8176)
### Description
Implements
https://github.com/parcel-bundler/lightningcss/pull/739/files.
Grid scoping in CSS Modules is disabled because Webpack CSS Modules
handling doesn't handle grid currently. This ensures moving from Webpack
to Turbopack doesn't have mismatching behavior around CSS grid.
<!--
✍️ Write a short summary of your work.
If necessary, include relevant screenshots.
-->
### Testing Instructions
<!--
Give a quick description of steps to test your changes.
-->
