Get the responsive visibility state of a column in the table. Please note - this property requires the Responsive extension for DataTables.
This method provides the ability to determine the Responsive visibility state of a single column in a table.
Please note that this is not the same as the column visibility control built into DataTables (`-api columns().visible()` / `-init columns.visible`) - Responsive implements its own column hiding.
For the selected column, determine if Responsive has hidden it or not.
trueif the column is responsive visible,
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