feat: Updating imaging and labs merging (#43834)

* feat: Enhance imaging study matching logic with eventId and detailed statistics

* feat: Add oracle health imaging study mock data with eventId and thumbnail/DICOM URL handling

* feat: Enhance imaging study merging logic with eventId extraction and matching stages

* feat: Refactor imaging study matching algorithm to a 3-stage process with eventId extraction and enhanced statistics

* feat: Enhance imaging study merging logic to skip ambiguous matches in stage 3

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Co-authored-by: mdewey <1793923+mdewey@users.noreply.github.com>

Author: mdewey