Document ReportShared object removal in migration guide

[dvacca-onfido]

What Changed

Added missing documentation to the v6 → v7 migration guide for the ReportShared object removal.

Details

• The ReportShared object has been dropped in v7
• Convenience accessors (getName(), getStatus(), getId()) added to parent Report object
• Other properties now accessed via specific report type accessors (e.g., getDocumentReport())

Migration Example

// Before (v6.x)
ReportName name = report.getReportShared().getName();
String checkId = report.getReportShared().getCheckId();

// After (v7.x)
ReportName name = report.getName(); // Convenience accessor
String checkId = report.getDocumentReport().getCheckId(); // Via specific type