Export of a maven repository is granted

Version
Pulp-in-one-container used here.

$ pulp status
{
  "versions": [
    {
      "component": "core",
      "version": "3.49.1",
      "package": "pulpcore",
      "module": "pulpcore.app",
      "domain_compatible": true
    },
    {
      "component": "ansible",
      "version": "0.21.3",
      "package": "pulp-ansible",
      "module": "pulp_ansible.app",
      "domain_compatible": false
    },
    {
      "component": "container",
      "version": "2.19.2",
      "package": "pulp-container",
      "module": "pulp_container.app",
      "domain_compatible": false
    },
    {
      "component": "deb",
      "version": "3.2.0",
      "package": "pulp_deb",
      "module": "pulp_deb.app",
      "domain_compatible": false
    },
    {
      "component": "gem",
      "version": "0.5.0",
      "package": "pulp-gem",
      "module": "pulp_gem.app",
      "domain_compatible": true
    },
    {
      "component": "maven",
      "version": "0.8.0",
      "package": "pulp-maven",
      "module": "pulp_maven.app",
      "domain_compatible": false
    },
    {
      "component": "ostree",
      "version": "2.3.0",
      "package": "pulp-ostree",
      "module": "pulp_ostree.app",
      "domain_compatible": true
    },
    {
      "component": "python",
      "version": "3.11.0",
      "package": "pulp-python",
      "module": "pulp_python.app",
      "domain_compatible": false
    },
    {
      "component": "rpm",
      "version": "3.25.1",
      "package": "pulp-rpm",
      "module": "pulp_rpm.app",
      "domain_compatible": true
    },
    {
      "component": "certguard",
      "version": "3.49.1",
      "package": "pulpcore",
      "module": "pulp_certguard.app",
      "domain_compatible": true
    },
    {
      "component": "file",
      "version": "3.49.1",
      "package": "pulpcore",
      "module": "pulp_file.app",
      "domain_compatible": true
    }

Describe the bug
The Export process is happy to export things that can’t be Imported.

To Reproduce
Populate a Maven repository.
Export thus produces the necessary files that can be verified through import-checker but cannot be imported, the import process is successful but the following task is failed.

Expected behavior
If the import is impossible so must be the export...

Additional context
https://github.com/pulp/pulpcore/blob/main/pulpcore/app/importexport.py#L173
https://discourse.pulpproject.org/t/import-operation-impossible-due-to-cve-2007-4559/1202/6

Start at pulpcore/app/importexport.py around line 173 and reproduce the failure with a populated Maven repository. Compare export behavior with the import-checker result and the subsequent failed import task. Done means export refuses repositories that cannot be imported, with the existing Maven reproduction covered by an appropriate test.