Fixed determining primary attribute key for meta tags #692
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Problem / Motivation
primaryAttributeKeyis set to the last item in theprimaryAttributesarray which matches the conditions. If the last property value isnull, the whole meta tag will be discarded.An example:
<meta content={'some-content'} property={'some-value'} name={null} />. HereprimaryAttributeKeywill be set toname(as it is last in the list of properties), and then the meta tag will not be rendered asnameisnull.Proposed solution
To avoid such situations we should consider only properties with non-false values as candidates for
primaryAttributeKey.