Fix: Updated color parsing functions and optimized component logic. (#10159)

### What problem does this PR solve?

refactor(timeline, modal, dataflow-result, dataset-overview): Updated
color parsing functions and optimized component logic.

### Type of change

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

web/src/components/ui/modal/modal.tsx

@@ -177,7 +177,7 @@ const Modal: ModalType = ({
                   <DialogPrimitive.Close asChild>
                     <button
                       type="button"
-                      className="flex h-7 w-7 items-center justify-center rounded-full hover:bg-muted"
+                      className="flex h-7 w-7 items-center justify-center rounded-full hover:bg-muted focus-visible:outline-none"
                     >
                       {closeIcon}
                     </button>