fix: revert fix for modal scrollbars for now (#13927)

Author: teallarson

airbyte-webapp/src/components/ui/Modal/Modal.module.scss

@@ -42,7 +42,6 @@
   max-width: calc(100vw - #{variables.$spacing-lg} * 2);
   display: flex;
   flex-direction: column;
-  overflow: hidden;
 
   &.sm {
     width: variables.$width-modal-sm;