Fix incorrect codes in pg_backup_archiver.c

[reshke]

pg_backup_archiver.c: In function ‘CloneArchive’:
pg_backup_archiver.c:4877:9: error: the comparison will always evaluate as ‘true’ for the address of ‘binary_upgrade’ will never be NULL [-Werror=address]
 4877 |         ConnectDatabase((Archive *) clone, &clone->public.ropt->cparams, true, &clone->public.ropt->binary_upgrade);
      |         ^~~~~~~~~~~~~~~
In file included from pg_backup_archiver.h:30,
                 from parallel.h:19,
                 from pg_backup_archiver.c:39:
pg_backup.h:138:33: note: ‘binary_upgrade’ declared here
  138 |         int                     binary_upgrade;
      |                                 ^~~~~~~~~~~~~~

Fixes #ISSUE_Number

What does this PR do?

Type of Change

• Bug fix (non-breaking change)
• New feature (non-breaking change)
• Breaking change (fix or feature with breaking changes)
• Documentation update

Breaking Changes

Test Plan

• Unit tests added/updated
• Integration tests added/updated
• Passed make installcheck
• Passed make -C src/test installcheck-cbdb-parallel

Impact

Performance:

User-facing changes:

Dependencies:

Checklist

• Followed contribution guide
• Added/updated documentation
• Reviewed code for security implications
• Requested review from cloudberry committers

Additional Context

CI Skip Instructions

---