Show company name + VAT ID on the account order-detail page; pick up Netto-row invoicing update

Order detail (/konto/bestellungen/[orderNumber]) already carried
companyName/vatId/vatExempt on CustomerOrderDetail but never rendered
them — a B2B customer looking at their own order couldn't see the
company/VAT info that's already on their invoice. Now shown in the
billing-address block, with a note when the order was VAT-exempt.

Also bumps @einfach-produktiv/invoicing to pick up the Netto-row fix
(now shown on every invoice, not just non-exempt ones).

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

package-lock.json

@@ -359,7 +359,7 @@
     },
     "node_modules/@einfach-produktiv/invoicing": {
       "version": "0.1.0",
-      "resolved": "git+https://git.mk360.de/Marco/einfach-produktiv-invoicing.git#942b8a86322b165a09e7b91af686b6c3538989f4",
+      "resolved": "git+https://git.mk360.de/Marco/einfach-produktiv-invoicing.git#31978d5ea222020601eb4507f9f0c314f928adff",
       "dependencies": {
         "@e-invoice-eu/core": "^3.1.1"
       },