fix: print ready-for-review comment on all ready PRs, not just draft->ready PRs

[MantisClone]

Changes

1. Added a new output variable type_ready to track whether the PR is in a ready-for-review state
2. Updated the Determine event type step to check if a PR was opened in a non-draft state (github.event.pull_request.draft == false)
3. Modified the condition for the ready-for-review-comment job to also run when:
   A PR is opened (event_type == 'opened') AND
   • The PR is not a draft (type_ready == 'true')
   • This will ensure that the ready-for-review comment is posted both when:

• A PR transitions from draft to ready state (via the "ready_for_review" event)
• A PR is created directly in the ready state (via the "opened" event with draft=false)
  The first_pr_comment will still run for first-time contributors regardless of whether the PR is in draft state or ready for review.