When running an incremental export on a repository, the --format flag is required for syncable content. Currently, the content type (syncable or importable) is inferred from the default export type when a --format flag is not passed. Change this behavior so that incremental exports infer their format from the previous export.

Description of problem:

When exporting content in syncable format via hammer and use '{}from-history-id' get error unless '{-}-format syncable' option is passed 

How reproducible:

Attempt to export content thats in syncable format via hammer in CLI without --format get below message:

Could not export the repository:
  Unable to incrementally export. Do a Full Export on the repository content.

Steps to Reproduce:

Using 'hammer content-export' when content is syncable format requires '–format syncable' to be stated else get error.

Actual behavior:

]# hammer content-export incremental repository --name="Red Hat Satellite Client 6 for RHEL 9 x86_64 RPMs" --organization-id=1 --product="Red Hat Enterprise Linux for x86_64" --from-history-id 13
Could not export the repository:
  Unable to incrementally export. Do a Full Export on the repository content.

OR

]# hammer content-export incremental repository --id=15 --organization-id=1 --product=235 --from-history-id 13
Could not export the repository:
  Unable to incrementally export. Do a Full Export on the repository content.

Expected behavior:
]# hammer content-export incremental repository --name="Red Hat Satellite Client 6 for RHEL 9 x86_64 RPMs" --organization-id=1 --product="Red Hat Enterprise Linux for x86_64" --from-history-id 13 --format syncable
[..................................................................................................................................................] [100%]
Generated /var/lib/pulp/exports/Default_Organization/Export-SYNCABLE-Red_Hat_Satellite_Client_6_for_RHEL_9_x86_64_RPMs-15/5.0/2025-04-15T17-19-42-00-00/metadata.json
OR
]# hammer content-export incremental repository --id=15 --organization-id=1 --product=235 --from-history-id=13 --format syncable
[..................................................................................................................................................] [100%]
Generated /var/lib/pulp/exports/Default_Organization/Export-SYNCABLE-Red_Hat_Satellite_Client_6_for_RHEL_9_x86_64_RPMs-15/4.0/2025-04-15T17-16-51-00-00/metadata.json
Business Impact / Additional info: