[backport v1.4] [BUG] rancher/rancher-agent:v2.9.2 image missing in the Harvester ISO

[harvesterhci-io-github-bot]

backport the issue #7157

[harvesterhci-io-github-bot]

Pre Ready-For-Testing Checklist

• If labeled: require/HEP Has the Harvester Enhancement Proposal PR submitted?

• Where is the reproduce steps/test steps documented?
  The reproduce steps/test steps are at: feat: bump rancher to v2.9.3 and RKE2 to v1.30.7+rke2r1 (backport #900) harvester-installer#904

• Is there a workaround for the issue? If so, where is it documented?
  The workaround is at: feat: add known issue about v1.4.0 airgapped environment docs#693

• Have the backend code been merged (harvester, harvester-installer, etc) (including backport-needed/*)?
  The PR is at: feat: bump rancher to v2.9.3 and RKE2 to v1.30.7+rke2r1 (backport #900) harvester-installer#904

• If labeled: area/ui Has the UI issue filed or ready to be merged?

• If labeled: require/doc, require/knowledge-base Has the necessary document PR submitted or merged?
  The documentation/KB PR is at: feat: add known issue about v1.4.0 airgapped environment docs#693

• If NOT labeled: not-require/test-plan Has the e2e test plan been merged? Have QAs agreed on the automation test case? If only test case skeleton w/o implementation, have you created an implementation issue?

  • The automation skeleton PR is at:
  • The automation test case PR is at:

• If the fix introduces the code for backward compatibility Has a separate issue been filed with the label release/obsolete-compatibility?
  The compatibility issue is filed at:

[noahgildersleeve]

Tested in Harvester v1.4.1-rc1. Validated that rancher/rancher-agent was available in initial airgap install with docker image ls | grep agent. it was v2.9.3, not v2.9.2 though.