FFI: Rename ResultTypeInfo::write_to to ffi::write_result_to

It's not intended to be overridden, and this is actually /more/ in
line with the other write_*_to helpers that exist.

rust/bridge/ffi/src/lib.rs

@@ -138,7 +138,7 @@ pub unsafe extern "C" fn signal_sealed_session_cipher_decrypt(
 
         write_optional_cstr_to(sender_e164, Ok(decrypted.sender_e164))?;
         write_cstr_to(sender_uuid, Ok(decrypted.sender_uuid))?;
-        write_uint32_to(sender_device_id, Ok(decrypted.device_id))?;
+        write_result_to(sender_device_id, decrypted.device_id)?;
         write_bytearray_to(out, out_len, decrypted.message)
     })
 }