Fixes: Fixed some bugs #10703 (#11180)

### What problem does this PR solve?

Fixes: Fixed some bugs #10703

- Removed S3 upload from the file upload component
- Updated the dropdown menu style on the model provider page
- Updated some model provider icons
- Fixed other style issues

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/components/ui/command.tsx

@@ -15,7 +15,7 @@ const Command = React.forwardRef<
   <CommandPrimitive
     ref={ref}
     className={cn(
-      'flex h-full w-full flex-col overflow-hidden rounded-md bg-popover text-popover-foreground',
+      'flex h-full w-full flex-col overflow-hidden rounded-md bg-bg-base text-text-primary border-[0.5px] border-border-button',
       className,
     )}
     {...props}