Help Center: fix "Get help" button styling while resolving (#113358)

The footer button rendered with `isBusy` and `aria-disabled` while the support
status and connection health checks were in flight, which replaced its blue
border with WordPress components' near-invisible `#dbdbdb` disabled border and
painted a striped gradient over the background. The button stopped reading as a
button.

Drop `isBusy` and keep the accent border, accent text, and a dimmed opacity for
the disabled state. The click guard stays so the button can't navigate before
the human-support route is resolved.

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: escapemanuele

packages/help-center/src/components/help-center-footer.scss

@@ -23,6 +23,16 @@
 		&:hover {
 			box-shadow: none;
 		}
+
+		// Keep the button recognisable while the destination is still resolving:
+		// the default disabled style greys the border out to near-invisibility.
+		&:disabled,
+		&[aria-disabled="true"],
+		&[aria-disabled="true"]:hover {
+			border-color: var(--wp-components-color-accent, var(--wp-admin-theme-color, $help-center-blue));
+			color: var(--wp-components-color-accent, var(--wp-admin-theme-color, $help-center-blue));
+			opacity: 0.6;
+		}
 	}
 }
 

packages/help-center/src/components/help-center-footer.tsx

@@ -92,7 +92,6 @@ export const HelpCenterContactButton = () => {
 					variant="secondary"
 					className="button help-center-contact-page__button"
 					disabled={ isResolvingHumanRoute }
-					isBusy={ isResolvingHumanRoute }
 					accessibleWhenDisabled
 					__next40pxDefaultSize
 				>