fixup! fix(core,legacy): Fix domain-only ethTypedData

Add new screen for approving domain-only eth type data on Trezor T.
This replaces the old "Confirm message" screen.

core/src/apps/ethereum/layout.py

@@ -119,6 +119,16 @@ async def confirm_hash(ctx: Context, message_hash: bytes) -> None:
     )
 
 
+def require_confirm_empty_typed_message(ctx: Context) -> Awaitable[None]:
+    return confirm_text(
+        ctx,
+        "confirm_empty_typed_message",
+        title="Confirm message",
+        data="",
+        description="No message field",
+    )
+
+
 async def should_show_domain(ctx: Context, name: bytes, version: bytes) -> bool:
     domain_name = decode_typed_data(name, "string")
     domain_version = decode_typed_data(version, "string")

core/src/apps/ethereum/sign_typed_data.py

@@ -20,6 +20,7 @@
 from .layout import (
     confirm_hash,
     confirm_typed_value,
+    require_confirm_empty_typed_message,
     should_show_array,
     should_show_domain,
     should_show_struct,
@@ -84,6 +85,7 @@ async def generate_typed_data_hash(
     # In this case, we ignore the "message" part and only use the "domain" part
     # https://ethereum-magicians.org/t/eip-712-standards-clarification-primarytype-as-domaintype/3286
     if primary_type == "EIP712Domain":
+        await require_confirm_empty_typed_message(ctx)
         message_hash = b""
     else:
         show_message = await should_show_struct(