Handle connection being closed in legacy samsungtv (#52137)

* Handle connection being closed in legacy samsungtv

- Mirror the websocket behavior

Fixes
```
2021-06-24 02:54:13 ERROR (MainThread) [homeassistant.helpers.entity] Update for media_player.89_guestroom fails
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 401, in async_update_ha_state
    await self.async_device_update()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 609, in async_device_update
    raise exc
  File "/usr/local/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/components/samsungtv/media_player.py", line 124, in update
    self._state = STATE_ON if self._bridge.is_on() else STATE_OFF
  File "/usr/src/homeassistant/homeassistant/components/samsungtv/bridge.py", line 113, in is_on
    return self._get_remote() is not None
  File "/usr/src/homeassistant/homeassistant/components/samsungtv/bridge.py", line 232, in _get_remote
    self._remote = Remote(self.config.copy())
  File "/usr/local/lib/python3.8/site-packages/samsungctl/remote.py", line 9, in __init__
    self.remote = RemoteLegacy(config)
  File "/usr/local/lib/python3.8/site-packages/samsungctl/remote_legacy.py", line 32, in __init__
    self._read_response(True)
  File "/usr/local/lib/python3.8/site-packages/samsungctl/remote_legacy.py", line 77, in _read_response
    raise exceptions.ConnectionClosed()
samsungctl.exceptions.ConnectionClosed
```

* add coverage

* pass instead

homeassistant/components/samsungtv/bridge.py

@@ -234,6 +234,8 @@ class SamsungTVLegacyBridge(SamsungTVBridge):
             except AccessDenied:
                 self._notify_callback()
                 raise
+            except (ConnectionClosed, OSError):
+                pass
         return self._remote
 
     def _send_key(self, key):

tests/components/samsungtv/test_media_player.py

@@ -340,6 +340,32 @@ async def test_update_unhandled_response(hass, remote, mock_now):
         assert state.state == STATE_ON
 
 
+async def test_connection_closed_during_update_can_recover(hass, remote, mock_now):
+    """Testing update tv connection closed exception can recover."""
+    await setup_samsungtv(hass, MOCK_CONFIG)
+
+    with patch(
+        "homeassistant.components.samsungtv.bridge.Remote",
+        side_effect=[exceptions.ConnectionClosed(), DEFAULT_MOCK],
+    ):
+
+        next_update = mock_now + timedelta(minutes=5)
+        with patch("homeassistant.util.dt.utcnow", return_value=next_update):
+            async_fire_time_changed(hass, next_update)
+            await hass.async_block_till_done()
+
+        state = hass.states.get(ENTITY_ID)
+        assert state.state == STATE_OFF
+
+        next_update = mock_now + timedelta(minutes=10)
+        with patch("homeassistant.util.dt.utcnow", return_value=next_update):
+            async_fire_time_changed(hass, next_update)
+            await hass.async_block_till_done()
+
+        state = hass.states.get(ENTITY_ID)
+        assert state.state == STATE_ON
+
+
 async def test_send_key(hass, remote):
     """Test for send key."""
     await setup_samsungtv(hass, MOCK_CONFIG)