UX-46: Dutch status rows, banners, notes and wizard lines on the NL pages

Rows and banners are built once with their Dutch beside them (messages.Bi)
and status_payload() picks one by the page's language. Settings notes and the
wizard's checks carry a Dutch twin (Note.nl) that /config/validate picks by
the posted language. The peak forecast label drops "(W)" in EN and NL.

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

goodwe_controller/app/setuponly.py

@@ -54,10 +54,12 @@ class SetupOnly:
 
     def status_payload(self, lang: str = "en") -> dict:
         return {"setup_only": True, "mode": "setup_only",
-                "banner": messages.banner_setup_only(), "level": "warn",
+                "banner": messages.pick(messages.banner_setup_only(),
+                                       lang), "level": "warn",
                 "rows": [["Control", "not started, in setup"]],
                 "checks": [{"ok": False, "warn": True,
-                            "text": messages.row_setup_only()}],
+                            "text": messages.pick(messages.row_setup_only(),
+                                                  lang)}],
                 "hint": self.hint, "events": list(self.events)}
 
     async def handle_action(self, what):