Feat: Restore the button's background color #3221 (#9307)

### What problem does this PR solve?

Feat: Restore the button's background color #3221
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chunk/index.tsx

@@ -69,14 +69,13 @@ export default function ChunkPage() {
             options={options}
             value={path}
             onChange={navigateToChunk as (val: SegmentedValue) => void}
-            className="bg-colors-background-inverse-standard text-colors-text-neutral-standard"
           ></Segmented>
         </div>
         <div className="flex items-center gap-2">
           <Button variant={'icon'} size={'icon'}>
             <EllipsisVertical />
           </Button>
-          <Button variant={'tertiary'} size={'sm'}>
+          <Button size={'sm'}>
             <Save />
             Save
           </Button>