Add missing variable to light theme

[coolcat-creations]

Pull Request for Issue # .

Summary of Changes

Add missing variable in light mode

Actual result BEFORE applying this Pull Request

Before this PR

Expected result AFTER applying this Pull Request

[brianteeman]

should it not be the same as elsewhere eg com_categories

[coolcat-creations]

Yes it should. I dont know why people decide to use different classes for same things all over the backend. That makes things really hard. :-)

[brianteeman]

I would fix the markup to use the correct class rather than the css

[coolcat-creations]

Ok then I need a decision if this should be a btn-secondary or in all other views a btn-info
Anyway this PR is good to fix any appeareance of btn-info if used somewhere

[brianteeman]

I did an additional PR for the markup #43120

[Quy]

I have tested this item ✅ successfully on 2d367a0

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[viocassel]

I have tested this item ✅ successfully on 2d367a0

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/43117.}

[Quy]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/43117.}

[wilsonge]

Thanks!