Wrap the return of CMB2->box_classes() in sanitize_html_class() per VIP Feedback #1255
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Description
Wrapping the return of
CMB2->box_classes()
insanitize_html_class()
per WP VIP Feedback.Motivation and Context
Sanitizes the class of the CMB2 box.
Risk Level
Minimal risk
Testing procedure
cmb2_wrap_classes
to add some class names with quotes or special characters.Types of changes
Checklist: