DatePicker: toggleCallback missing on dropdownbutton slot

[walnutjon]

Describe the bug

I think that toggleCallback is missing on the dropdownbutton slot for DatePicker, so there is no way to trigger the opening of the calendar when using a custom button.

If I output slotProps from within the template I just get: { key: 1 }

Looking at the code for DatePicker.vue 4.1.0, line 35 is:

<slot v-if="showIcon && iconDisplay === 'button' && !inline" name="dropdownbutton">

I believe this should look something like the following:

<slot v-if="showIcon && iconDisplay === 'button' && !inline" name="dropdownbutton" :toggleCallback='onButtonClick'>

(I don't know much about building these libraries, so I may be way off base on the cause here.)

Reproducer

https://stackblitz.com/edit/primevue-4-ts-vite-issue-template-qgmkpu?file=src%2FApp.vue

PrimeVue version

4.1.0

Vue version

3.x

Language

TypeScript

Build / Runtime

Vite

Browser(s)

No response

Steps to reproduce the behavior

Declare template, something like:

  <DatePicker v-model="testDate" showIcon iconDisplay="button" inputId="test">
    <template #dropdownbutton="slotProps">
      No toggleCallback on slotprops: {{ slotProps }}
    </template>
  </DatePicker>

Expected behavior

toggleCallback is available on the slot for dropdownbutton, I can call it and the calendar opens.