Drop select-all on unconfirmed VAT ID, keep the refocus

Re-focus still returns attention to the field, but no longer wipes
the customer's input via select() — a stray keystroke while glancing
at the error message shouldn't erase what they typed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/checkout/components/CheckoutContent.tsx

@@ -393,13 +393,10 @@ export function CheckoutContent({
         return;
       }
       setVatIdViesStatus(data.valid ? "valid" : "invalid");
-      // Re-focus + select the whole value on an unconfirmed VAT ID — the
-      // customer almost certainly needs to retype it (a typo, or the
-      // wrong id entirely), so the next keystroke should just replace it
-      // outright rather than requiring a manual select-all first.
+      // Re-focus (no select-all) on an unconfirmed VAT ID so the customer's
+      // attention returns to the field without wiping what they typed.
       if (!data.valid) {
         input.focus();
-        input.select();
       }
     } catch {
       setVatIdViesStatus("unavailable");