DataTable should give some visual indication when filtering is applied to a column

[OliverRC]

Right now, if you apply filtering to a column in the PrimeVue DataTable there is no visual indication or class applied to the column.
It would be great if a class was applied or the filter icon was filled in the primary color to allow the user to see what columns had filters applied.

As a side note:
I find it the passthrough documentation very confusing. The docs say these are the options available

However, if you print the keys on what is passed to :pt it is instance, props, parent, global no context

In general I find passthrough poorly explained and documented.

[OliverRC]

I made some progress with PassThrough by digging it the instance.
https://stackblitz.com/edit/dupsmvtf?file=src%2FApp.vue

      <Column
        field="name"
        header="Name"
        style="min-width: 12rem"
        :pt="{
          filter: (options) => ({
            class: [
              'rounded-full',
              { 'border-2 border-indigo-500 border-solid': options.instance.hasFilter() },
            ],
          }),
        }"
      >

Or alternatively as a global PassThrough

  pt: {
    datatable: {
      column: {
        filter: (options) => ({
          class: [
            'rounded-full',
            {
              'border-2 border-indigo-500 border-solid':
                options.instance.hasFilter(),
            },
          ],
        }),
      },
    },
  },

I still think this should be default functionality but working around it now