[PULP-1360] pulp content upload --directory --use-temp-repository fails to call signing service

Summary

When bulk-uploading a directory full of packages, all the packages get signed, but if I add --use-temp-repository, the packages all bypass signing.

Steps to reproduce

Create a repository with a signing service.
Gather some unsigned RPMs to test with, or strip signatures off existing ones.

Upload a package with --use-temp-repository and --directory:
pulp rpm content -t package upload --directory missing-pkgs --repository release-x86_64-os --chunk-size=8MB --use-temp-repository

Download a package from your published repository version and note that none of the uploaded packages are signed.

Expected behavior

Each package should be signed when it is added to the repository, whether or not it passes through a temporary repository.

Stacktrace/Error log

N/A

Pulp and pulp-cli version info

$ pulp --version
Pulp3 Command Line Interface, Version 0.32.0.dev
Plugin Versions:
  common: 0.32.0.dev
$ pulp status
{
  "versions": [
    {
      "component": "core",
      "version": "3.69.0",
      "package": "pulpcore",
      "module": "pulpcore.app",
      "domain_compatible": true
    },
    {
      "component": "ansible",
      "version": "0.23.1",
      "package": "pulp-ansible",
      "module": "pulp_ansible.app",
      "domain_compatible": false
    },
    {
      "component": "container",
      "version": "2.22.0",
      "package": "pulp-container",
      "module": "pulp_container.app",
      "domain_compatible": false
    },
    {
      "component": "deb",
      "version": "3.4.0",
      "package": "pulp_deb",
      "module": "pulp_deb.app",
      "domain_compatible": false
    },
    {
      "component": "maven",
      "version": "0.8.1",
      "package": "pulp-maven",
      "module": "pulp_maven.app",
      "domain_compatible": false
    },
    {
      "component": "ostree",
      "version": "2.4.4",
      "package": "pulp-ostree",
      "module": "pulp_ostree.app",
      "domain_compatible": true
    },
    {
      "component": "python",
      "version": "3.12.5",
      "package": "pulp-python",
      "module": "pulp_python.app",
      "domain_compatible": true
    },
    {
      "component": "rpm",
      "version": "3.27.3.dev",
      "package": "pulp-rpm",
      "module": "pulp_rpm.app",
      "domain_compatible": true
    },
    {
      "component": "certguard",
      "version": "3.69.0",
      "package": "pulpcore",
      "module": "pulp_certguard.app",
      "domain_compatible": true
    },
    {
      "component": "file",
      "version": "3.69.0",
      "package": "pulpcore",
      "module": "pulp_file.app",
      "domain_compatible": true
    }
  ],
  "online_workers": [
    {
      "pulp_href": "/pulp/api/v3/workers/01961626-02e6-7906-a83e-4007fc4f0f0f/",
      "prn": "prn:core.worker:01961626-02e6-7906-a83e-4007fc4f0f0f",
      "pulp_created": "2025-04-08T16:05:12.040975Z",
      "pulp_last_updated": "2025-04-08T16:05:12.041042Z",
      "name": "1@pulp-worker-757fcbb6df-6c8jw",
      "last_heartbeat": "2025-05-22T04:57:44.073499Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.3.dev",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      },
      "current_task": null
    },
    {
      "pulp_href": "/pulp/api/v3/workers/01961789-2643-7092-89ab-cb46f7609424/",
      "prn": "prn:core.worker:01961789-2643-7092-89ab-cb46f7609424",
      "pulp_created": "2025-04-08T22:33:06.373643Z",
      "pulp_last_updated": "2025-04-08T22:33:06.373661Z",
      "name": "1@pulp-worker-757fcbb6df-jzzqb",
      "last_heartbeat": "2025-05-22T04:57:47.139500Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.3.dev",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      },
      "current_task": null
    }
  ],
  "online_api_apps": [
    {
      "name": "9@pulp-api-5c7dbb4968-kr7wm",
      "last_heartbeat": "2025-05-22T04:57:51.651460Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.3.dev",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      }
    },
    {
      "name": "10@pulp-api-5c7dbb4968-kr7wm",
      "last_heartbeat": "2025-05-22T04:57:51.642939Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.3.dev",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      }
    }
  ],
  "online_content_apps": [
    {
      "name": "10@pulp-content-559495989b-gprv6",
      "last_heartbeat": "2025-05-22T04:57:48.425790Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.2",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      }
    },
    {
      "name": "11@pulp-content-559495989b-gprv6",
      "last_heartbeat": "2025-05-22T04:57:45.453453Z",
      "versions": {
        "deb": "3.4.0",
        "rpm": "3.27.2",
        "core": "3.69.0",
        "file": "3.69.0",
        "maven": "0.8.1",
        "ostree": "2.4.4",
        "python": "3.12.5",
        "ansible": "0.23.1",
        "certguard": "3.69.0",
        "container": "2.22.0"
      }
    }
  ],
  "database_connection": {
    "connected": true
  },
  "redis_connection": {
    "connected": false
  },
  "storage": {
    "total": null,
    "used": 141642827633,
    "free": null
  },
  "content_settings": {
    "content_origin": "https://pulp.example.com",
    "content_path_prefix": "/pulp/content/"
  },
  "domain_enabled": false
}

Additonal context

N/A

Start at the pulp rpm content -t package upload command, comparing the --directory path with the --use-temp-repository path. Reproduce the upload with an RPM signing service and trace where signing is invoked or skipped. Done means directory uploads still sign every package when both options are used, with coverage for this combination.