[Season] delete seasons

Adding tags, to attract volunteers.

Options:
- add a JS link to clear the data
- add a checkbox. if set, the season is deleted upon saving
- add a text, with instructions how to delete (e.g., 'just remove all timeslots', or 'set season name to XYZ'). Perhaps with some additional php coding.

+1 just run into this issue....

Please try this.

A JS link would be nicer perhaps, but I am not a hero in that.
This should do the trick.

for me it worked (I applied it manually). I would remove the ":" after the line: "Remove upon save:"

The trailing colon was added by the theme.
Not sure how to remove that. It must be done in twig, or css.

I tried a '#pre_render' and '#post_render' in php, but that is too early.

    $operations['delete'] = [
      '#type' => 'checkbox',
      '#title' => t('Remove upon save'),
      '#post_render' => [
        [static::class, 'postRenderCheckboxTitle'],
      ],
      '#title_display' => 'after', // {'before', 'after', ' invisible' }
      '#attributes' => [
        'class' => ['office-hours-season-delete-link', 'office-hours-link'],
      ],
    ];

The post_render array gives: <label for="edit-field-officehours2-office-hours-season-200-season-header-operations-data-delete" class="form-item__label option">Remove upon save</label>

I will leave that for someone else, leaving this ticket open on 'needs work'.