Check correct channel avoiding multiple changes #587
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The wrong stored channel was checked when seeing if a channel change is actually required. This caused the goggles to try to change channels multiple times as the backpack sends the command 3 times to ensure that one gets through. This also interacted with a bug in the VTX Admin code where the SPI based receivers save the channel to betaflight flash which causes an interruption in the connection, when the connection is re-established another VTXAdmin command was sent because the debounce was too short and got into an infinite loop. See ExpressLRS/ExpressLRS#3488