Move Toggle Screen Curtain command to Misc category (#19452)
Fix-up of #19177.
Summary of the issue:
Since #19177, Screen curtain settings have been moved from Vision to "Privacy and Security" settings panel in the settings dialog. Though, in the input gestures dialog, its toggle command is still located in the Vision category. This is not consistent.
Description of user facing changes:
In the input gestures dialog, the screen curtain toggle command is now located in the Misc category rather than in the Vision category.
Description of developer facing changes:
N/A
Description of development approach:
Removed the category of the script. A script with no category lands in the Misc category.
