fix: Use only local unitxt catalogs when in offline mode

[ruivieira]

Use only unitxt catalogs when in offline mode.

Refer to RHOAIENG-17761.

[openshift-ci]

@ruivieira: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/trustyai-service-operator-e2e	9a5c5e3	link	true	/test trustyai-service-operator-e2e

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: christinaexyou

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[github-actions]

PR image build and manifest generation completed successfully!

📦 PR image: quay.io/trustyai/trustyai-service-operator-ci:9a5c5e30acee78517cda34b9d9459120cb7c8a35

📦 LMES driver image: quay.io/trustyai/ta-lmes-driver:9a5c5e30acee78517cda34b9d9459120cb7c8a35

📦 LMES job image: quay.io/trustyai/ta-lmes-job:9a5c5e30acee78517cda34b9d9459120cb7c8a35

🗂️ CI manifests

devFlags:
  manifests:
    - contextDir: config
      sourcePath: ''
      uri: https://api.github.com/repos/trustyai-explainability/trustyai-service-operator-ci/tarball/operator-9a5c5e30acee78517cda34b9d9459120cb7c8a35