mt-modal-action does not pass slots

[SebastianFranze]

Package

@meteor/component-library

Package version

4.21.1

Browser

No response

Operating System

No response

Link to minimal reproduction

No response

Steps to reproduce

Use the second example from https://meteor.shopware.com/?path=/docs/components-overlay-mt-modal--docs

Now pass down the frontIcon slot to the sw-modal-action component to display a checkmark in front of the button's label

<mt-modal-action
  :as="MtButton"
  variant="primary"
  @click="(done) => { done(); }"
>
  <template #iconFront="{ size }">
    <mt-icon name="regular-checkmark" :size="size" />
  </template>

  Confirm action
</mt-modal-action>

Actual behavior

The slot is not displayed. The icon from the example is not shown.

Expected behavior

The slot should be passed and displayed. The icon from the example should be shown