Fix checkout password focus-trap and ToDo-Karten hero CTA copy

The new-account password field's onBlur re-focused itself whenever the
value was still invalid (<8 chars), the same generic pattern every other
blur-validated checkout field uses. For most fields that's a helpful
"fix it now" nudge, but it's a genuine trap on a password field near the
end of a card — a shopper could never Tab or click the submit button
until the password was already valid. Dropped just the refocus here
(inline error text still appears immediately); every other field keeps
the existing behavior.

TodoKartenHero.tsx's price line never showed "zzgl. Versand" at all
(pre-existing gap, unrelated to Kleinunternehmer), unlike Pricing.tsx/
ProductSpotlight.tsx — now consistent across all three.

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

package-lock.json

@@ -358,8 +358,8 @@
       }
     },
     "node_modules/@einfach-produktiv/invoicing": {
-      "version": "0.2.1",
-      "resolved": "git+https://git.mk360.de/Marco/einfach-produktiv-invoicing.git#439165c98d6c3cc5c7c7cfe6e0a08d9242983ac8",
+      "version": "0.2.2",
+      "resolved": "git+https://git.mk360.de/Marco/einfach-produktiv-invoicing.git#ceaa437724dae1adfd582ca209300d2ee0a10e68",
       "dependencies": {
         "@e-invoice-eu/core": "^3.1.1"
       },