Missing |t filter on "Order number:" and "Order date:" strings in commerce-order-receipt.html.twig

Describe your bug or feature request.

The commerce-order-receipt.html.twig template contains two hardcoded strings that are not passed through the |t (translation) filter, which prevents them from being translated into other languages.

If a bug, provide steps to reproduce it from a clean install.

Actual behaviour: The labels always render in English regardless of the active language.

If a bug, provide steps to reproduce it from a clean install.

1. Install and enable a second language (e.g. French) via Configuration - Regional and language - Languages.
2. Enable content/interface translation.
3. Configure a store and complete a test checkout to generate an order.
4. View the order receipt (/admin/commerce/orders/{order}/receipt or the emailed receipt) with the interface language switched to the non-English language.
5. Observe that "Order Confirmation", "Shipping Information", etc. are translated, but "Order number:" and "Order date:" remain in English.
6. Attempt to translate the strings via Configuration - Regional and language - User interface translation - the strings cannot be found because they are never registered with the translation system.

Proposed fix: Add the |t filter to both strings.