Update owner account metadata and sign-checker workflow for AssetHub Polkadot request

[Copilot]

Checklist

• Use the owner account that submitted registrar_reserve to sign the project information, and fill in the signature.
• After each update of the project information, please sign the latest data and submit the signature.
• Add a description for your pr, the description includes the original data.
  • Problem summary: The request provided a specific AssetHub Polkadot account and review feedback with an updated sign_checker.yaml workflow reference.
  • Changes made:
    • Updated Projects-info/owner/owner.json to set data["Owner account"] to 126yspChziT4VqCLnxggevqxsmU9iF5pCCNh7uwvfYGPm5ed.
    • Updated .github/workflows/sign_checker.yaml per feedback (assets path trigger, changed-files SHA wiring, logo-format label handling), while keeping secure pull_request_target checkout behavior and compatible checker inputs.
  • Validation: YAML syntax validated; workflow/security validation rerun with no remaining CodeQL alerts.
• Fill up the signature of the original data, signature account to Signature Auto check.

Signature Auto check

Para ID Owner & Signature Account:
126yspChziT4VqCLnxggevqxsmU9iF5pCCNh7uwvfYGPm5ed

Data that needs to be signed:
Projects-info/owner/owner.json

Signature Hash: <REPLACE THE SIGNATURE>

[TuneMe81]

[Copilot]

Updated .github/workflows/sign_checker.yaml based on the attached file and aligned it with the current checker action inputs, then hardened the pull_request_target checkout path and follow-up conditions. Addressed in commit 4cd5d0e.

[TuneMe81]

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