TV Cycles through each input on start
Hi Merdok - I have had your webos tv running for about a year and has been great.  However in the last couple of weeks, I have been experiencing issues.  When I turn it on via HomeKit/Homebridge, it cycles through each of the inputs on startup instead of just going to the last known input.

When I look at the console while starting I can see it's homebridge doing this, not the TV:

```
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch com.webos.app.hdmi3 but TV is off, attempting to power on the TV
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch amazon but TV is off, attempting to power on the TV             
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch com.webos.app.livetv but TV is off, attempting to power on the T
V                                                                                                                                           
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch com.webos.app.hdmi2 but TV is off, attempting to power on the TV
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch com.webos.app.hdmi1 but TV is off, attempting to power on the TV
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch youtube.leanback.v4 but TV is off, attempting to power on the TV
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch com.webos.app.hdmi4 but TV is off, attempting to power on the TV
[9/14/2019, 11:46:16 PM] [TV] webOS - app switch service - Trying to launch netflix but TV is off, attempting to power on the TV            
[9/14/2019, 11:46:20 PM] [TV] webOS - Error: Sec-WebSocket-Accept header from server didn't match expected value of nuqrK+XmS4Bp1MtEAKxSKgUw
DaI=
[9/14/2019, 11:46:20 PM] [TV] webOS - connected to TV                                                                                       
[9/14/2019, 11:46:20 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi4                                                      
[9/14/2019, 11:46:20 PM] [TV] webOS - audio status changed                                                                                  
[9/14/2019, 11:46:20 PM] [TV] webOS - current volume: 48                                                                                    
[9/14/2019, 11:46:20 PM] [TV] webOS - muted: No                                                                                             
[9/14/2019, 11:46:22 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi3                                                      
[9/14/2019, 11:46:22 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi2                                                      
[9/14/2019, 11:46:23 PM] [TV] webOS - app launched, current appId: com.webos.app.livetv                                                     
[9/14/2019, 11:46:24 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi1                                                      
[9/14/2019, 11:46:25 PM] [TV] webOS - app launched, current appId: youtube.leanback.v4                                                      
[9/14/2019, 11:46:25 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi4                                                      
[9/14/2019, 11:46:26 PM] [TV] webOS - app launched, current appId: amazon                                                                   
[9/14/2019, 11:46:27 PM] [TV] webOS - app launched, current appId: netflix                                                                  
[9/14/2019, 11:46:35 PM] [TV] webOS - app launched, current appId: com.webos.app.hdmi1                            
```
Nothing has changed with my configuration although my docker container I run homebridge from does do automatic updates to all the homebridge add-ons on boot, so upgrades definitely could have happened. 

One thing to add, I am having to use the legacy tv configuration as my iPad in the wall is getting on a bit and only supports iOS 10 which doesn't support the TV entity within Homekit - so maybe that has something to do with it?

Any advice would be appreciated.

Thanks.