Update src/index.css

feat: DXDP-5245 | Review comments added

Co-authored-by: Amber Kamboj <97463982+amberkamboj77@users.noreply.github.com>

Author: grandmaester

src/index.css

@@ -218,6 +218,7 @@
   line-height: 1.5;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
+  /* UDS Base Variables - Light Theme */
   --radius: 0.625rem;
   --background: oklch(1 0 0);
   --foreground: oklch(0.145 0 0);