chore: use shadow-lg

Author: mrcthms

polaris-react/src/components/Tooltip/components/TooltipOverlay/TooltipOverlay.scss

@@ -7,8 +7,7 @@
   // stylelint-disable-next-line -- generated by polaris-migrator DO NOT COPY
   margin: var(--pc-tooltip-overlay-offset) var(--p-space-4) var(--p-space-4);
   opacity: 1;
-  // stylelint-disable-next-line -- hardcoding an extra shadow for the Tooltip to enable it to be more visible against white backgrounds
-  box-shadow: var(--p-shadow-popover), 0 0 20px 8px rgba(23, 24, 24, 0.02);
+  box-shadow: var(--p-shadow-popover), var(--p-shadow-lg);
   // stylelint-disable-next-line -- Polaris component custom properties
   border-radius: var(--pc-tooltip-border-radius);
   pointer-events: none;