0.86.2: generated `agentics-maintenance.yml` fails actionlint

[lkraav]

✖ docker run --rm -i -v $(git rev-parse --show-toplevel):/app -w /app rhysd/actionlint -color:
.github/workflows/agentics-maintenance.yml:49:13: string should not be empty [syntax-check]
   |
49 |           - ''
   |             ^~

This is from

  workflow_dispatch:
    inputs:
      operation:
        description: 'Optional maintenance operation to run'
        required: false
        type: choice
        default: ''
        options:
          - ''
          - 'disable'

I'm unsure what the right move here is, can default: '' still work with no such options item?

EDIT option removal blocked by

.github/workflows/agentics-maintenance.yml:47:18: default value "" of "operation" input is not included in its options "\"activity_report\", \"clean_cache_memories\", \"close_agentic_workflows_issues\", \"create_labels\", \"disable\", \"enable\", \"forecast\", \"safe_outputs\", \"update\", \"update_pull_request_branches\", \"upgrade\", \"validate\"" [events]