fix(ui): Remove overflow hidden from GuidedSteps StepDetails

The overflow: hidden on StepDetails was clipping focus rings (box-shadow
based) on form elements inside guided steps. Since min-width: 0 already
prevents grid blowout and child components handle their own horizontal
overflow via overflow-x: auto, this property is no longer needed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: priscilawebdev

static/app/components/guidedSteps/guidedSteps.tsx

@@ -371,7 +371,6 @@ const ChildrenWrapper = styled('div')<{isActive: boolean}>`
 `;
 
 const StepDetails = styled('div')`
-  overflow: hidden;
   grid-area: details;
   min-width: 0;
 `;