style: update scrollbar styling for mat-dialog-content

src/app/components/user-settings/user-settings.scss

@@ -2,6 +2,10 @@
 	display: block;
 }
 
+mat-dialog-content {
+	scrollbar-width: none;
+}
+
 mat-dialog-content > p {
 	margin: 0 0 1.5rem;
 	color: var(--ui-text-secondary);