Delete candidate confirmation modal is inconsistent between list and detail views

[chamals3n4]

Description

The "delete candidate" confirmation modal looks and reads differently depending on
where it's triggered from:

• Candidates list page (/candidates): simple modal, no icon, title reads
  "Delete this candidate?", confirm button reads "Delete"
• Candidate detail page (/candidates/:id): modal has a trash icon in a circular
  badge, title reads "Delete candidate?", confirm button reads "Delete Permanently"

Steps to Reproduce

1. Go to /candidates → click Delete on any row → note the modal style
2. Go to a candidate's detail page (/candidates/:id) → click Delete → note the
   different modal style

Expected Behavior

Both entry points should render the same CandidateDeleteDialog component with the
same title, description, and button label.

Component

frontend/app/(dashboard)/candidates/_components/candidate-delete-dialog.tsx