Creates an instance of MoveToSubplotContextCommand.
The context in which the move operation is performed.
The display service for focus management.
Plays the exit tone and announces the figure position.
Executes the move operation to exit the trace context and return to the figure lobby.
exitSubplot() already re-announces the figure position via the observer chain (TextViewModel.update clears any pending message). Announcing the exit cue after it therefore wins: notify() sets the message that overrides the nav value in the alert region, and React batches both synchronous dispatches into a single re-render, so the user hears one clear exit message plus the falling exit tone. In OFF text mode the message is null, so only the tone plays.
Command to move back to the subplot context from the trace context.