Fix KeyboardBT/BLE, JoystickBT/BLE not xmitting #3222
Merged
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Fixes #3221
The ::begin() for the BT/BLE HID devices shadows the lower-level HID::begin() calls. This means we need to explicitly call the parent's begin to set things like the _running flag. Without it, transmission from the BT/BLE device would be stopped by the virtual parent's ::send() since _running wasn't set.