web: codemod `web/diff` components to CSS modules
Created by: valerybugakov
Context
This PR results from the global-css-to-css-modules codemod application with some manual fixes, caused by the usage of global CSS classes tied to a React component in other parts of the codebase: e.g., .sidebar
class used outside of the <Sidebar />
component.
Changes
- The stylesheets in
client/web/src/components/diff
are converted to CSS modules.