Fixes #16020 - Prevent reflective XSS on form validation
Error messages for various form fields were not properly escaped to prevent HTML from being insert into them. This caused a possible reflective XSS in smart class parameter/varaible default value validations.
(cherry picked from commit cf0ce6d763014a0d637e402dc2266554b97beaa7)
Fixes #16020 - Prevent reflective XSS on form validation
Error messages for various form fields were not properly escaped to
prevent HTML from being insert into them. This caused a possible
reflective XSS in smart class parameter/varaible default value
validations.
(cherry picked from commit cf0ce6d763014a0d637e402dc2266554b97beaa7)