fix(dashboard): styling of shipping profiles domain (#7600)

**What**
- Fixes h2 -> h1 in list view.
- Increases spacing between containers based on new design.

Resolves CORE-2121

packages/admin-next/dashboard/src/routes/shipping-profiles/shipping-profile-detail/shipping-profile-detail.tsx

@@ -32,7 +32,7 @@ export const ShippingProfileDetail = () => {
   }
 
   return (
-    <div className="flex flex-col gap-y-2">
+    <div className="flex flex-col gap-y-3">
       {before.widgets.map((w, i) => {
         return (
           <div key={i}>

packages/admin-next/dashboard/src/routes/shipping-profiles/shipping-profiles-list/components/shipping-profile-list-table/shipping-profile-list-table.tsx

@@ -43,7 +43,7 @@ export const ShippingProfileListTable = () => {
   return (
     <Container className="divide-y p-0">
       <div className="flex items-center justify-between px-6 py-4">
-        <Heading level="h2">{t("shippingProfile.domain")}</Heading>
+        <Heading>{t("shippingProfile.domain")}</Heading>
         <div>
           <Button size="small" variant="secondary" asChild>
             <Link to="create">{t("actions.create")}</Link>

packages/admin-next/dashboard/src/routes/shipping-profiles/shipping-profiles-list/shipping-profile-list.tsx

@@ -7,7 +7,7 @@ import before from "virtual:medusa/widgets/shipping_profile/list/before"
 
 export const ShippingProfileList = () => {
   return (
-    <div className="flex flex-col gap-y-2">
+    <div className="flex flex-col gap-y-3">
       {before.widgets.map((w, i) => {
         return (
           <div key={i}>