Views contextual filter on taxonomy term ID, with - override title - only has replacement patterns for term ID available:
{{ arguments.field_taxo_term_prod_category_target_id }}
{{ raw_arguments.field_taxo_term_prod_category_target_id }}
Views should provide replacement token(s) that yield the TERM NAME, not the term ID (which is essentially useless).
If there is some other way to achieve the appropriate result, to display the - term name of the current taxonomy term when a View traverses a taxonomy vocabulary, what is it?
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step to reproduce
Create a view page with /taxonomy/term/% path and a contextual filter on an associated taxonomy term.
The option for "override title" and "replacement patterns" only provides the "target id", and not the term name, when it is the taxonomy term name that is surely the 99.99% desired use case.