Resolves whether the show/hide toggle button should render. The toggle only
makes sense when there is a transcript to toggle AND the consumer opted into
showing it (ShowTranscript) AND the consumer enabled the toggle control.
Parameters
hasTranscript: boolean
whether one or more transcript cues are present
showTranscript: boolean
the ShowTranscript master input
showToggle: boolean
the ShowTranscriptToggle input (whether the button renders)
Resolves whether the show/hide toggle button should render. The toggle only makes sense when there is a transcript to toggle AND the consumer opted into showing it (
ShowTranscript) AND the consumer enabled the toggle control.