fix: #3628614 Restore image formatter token help

Nick Hoperequested to merge
issue/glightbox-3628614:codex/3628614-token-help into 1.0.x

Restores the token-browser section and entity token category in both image formatters. Corrects conditional controls in display and Views forms.

Local browser checks on Drupal 11.4.8 confirm Media tokens and conditional controls for both formatters.

Issue: https://www.drupal.org/project/glightbox/issues/3628614 Equivalent video fix: https://www.drupal.org/project/glightbox_media_video/issues/3628598

AI-Generated: Yes (Codex prepared the formatter changes.)

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