Revert "fix(posts): split copy_text and callback_data into separate buttons per Bot API spec"

This reverts commit b96bffda37.

tests/test_writer_features.py

@@ -1232,10 +1232,9 @@ class PostCopyButtonTests(unittest.IsolatedAsyncioTestCase):
         ):
             await bot._send_three_posts(cast(Any, message), ["Пост А", "Пост Б"], user_id=None)
         first = message.answer.await_args_list[0]
-        copy_button, stats_button = first.kwargs["reply_markup"].inline_keyboard[0]
-        self.assertEqual(copy_button.copy_text.text, "Пост А")
-        self.assertIsNone(copy_button.callback_data)  # по доке: copy_text и callback_data в одной кнопке несовместимы
-        self.assertEqual(stats_button.callback_data, "copy_post:0")
+        button = first.kwargs["reply_markup"].inline_keyboard[0][0]
+        self.assertEqual(button.copy_text.text, "Пост А")
+        self.assertEqual(button.callback_data, "copy_post:0")
 
     async def test_copy_callback_records_event_and_keeps_button(self):
         callback = SimpleNamespace(
@@ -1243,7 +1242,6 @@ class PostCopyButtonTests(unittest.IsolatedAsyncioTestCase):
             message=MagicMock(spec=bot.Message),
             answer=AsyncMock(),
         )
-        callback.message.edit_reply_markup = AsyncMock()
         with patch.object(bot.asyncio, "to_thread", new=AsyncMock()) as to_thread:
             await bot.post_copy_pressed(cast(Any, callback))
         to_thread.assert_awaited_once()