Cover cross-schema object columns with colliding type names

[skhe]

Summary

• Extend the real DM8 regression to read a foreign object type from a local table when both schemas define a type with the same name.
• Record the schema-ID metadata patch and update the complex-type verification report after PR Resolve cross-schema complex column types by schema ID #23.

Verification

• Focused GB18030 real-database regression: 1 passed.
• git diff --check passed.