Adopt migrated bot issues via label and title lookup; backfill identity marker
### Problem/Motivation Implement issue adoption for drupal.org-to-GitLab migrated bot issues through two-phase matching: fast marker-based lookup (unchanged, most precise) followed by label-bounded title matching for migrated issues. Append the bot's identity marker to adopted issues via PUT so subsequent runs recognize them through the cheap marker path. Query both the bot account and drupalbot author so issues gain the marker on first adoption then stay matched on the fast path. ### Work items - Commit(s): [036d1062eb](https://git.drupalcode.org/project/project_analysis/-/commit/036d1062ebe2), [1fbcb53551](https://git.drupalcode.org/project/project_analysis/-/commit/1fbcb53551ba), [bfb5a27395](https://git.drupalcode.org/project/project_analysis/-/commit/bfb5a2739595), [fe536a3951](https://git.drupalcode.org/project/project_analysis/-/commit/fe536a39519f) ### Credit - Implemented by: @bbrala --- *Filed retroactively as part of the Drupal 12 rector coverage effort. Closed as fixed; credit to be applied to the contributors listed above.* *AI was used extensively to build this work and to file this issue. See [Dries Buytaert: AI-generated Rector rules for Drupal](https://dri.es/ai-generated-rector-rules-for-drupal) and [Björn Brala: Drupal Rector rules are config, not code. Mostly.](https://www.linkedin.com/pulse/drupal-rector-rules-config-code-mostly-bj%C3%B6rn-brala-vfpwe/).*
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