[mod_* templates] Always use htmlspecialchars($str, ENT_COMPAT, 'UTF-8')

[zero-24]

Pull Request for Issue #10399 .

Summary of Changes

Always use htmlspecialchars($str, ENT_COMPAT, 'UTF-8')

Testing Instructions

Please review or test all changed files

[brianteeman]

I have tested this item ✅ successfully on 95bd2f9

On code review

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10422.}

[alikon]

I have tested this item ✅ successfully on 95bd2f9

on code review

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10422.}

[brianteeman]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10422.}