EIP-712 fixes

- Now displays a Review page before showing the fields
- Now asks for confirmation before rejecting
- Now does not refresh the screen twice after a signature approval/rejection
- Both EIP-712 implementations on par UX-wise
- Fixed v0 approve/reject status word mismatch
- Unified NBGL UI of both implementations

src_features/signMessageEIP712/context_712.c

@@ -72,7 +72,6 @@ void eip712_context_deinit(void) {
     mem_reset();
     eip712_context = NULL;
     reset_app_context();
-    ui_idle();
 }
 
 #endif