BHV-8206: Restore moon.ToggleText for backwards-compatibility.

Issue
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The `moon.ToggleText` was removed during a clean-up, as the implementation of `moon.ToggleItem` had changed. Unfortunately, certain apps are still using the `moon.ToggleText` kind directly.

Fix
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Fully restore `moon.ToggleText`. We will make a note to developers that this kind is deprecated and to upgrade their apps for the eventual removal of this kind.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>