fix: refresh mcp runtime openssl packages

[xsscx]

PR Summary

#1702

• Refreshes the MCP runtime OpenSSL packages with a fail-closed minimum-version guard.
• Adds .github/workflows/copilot-setup-steps.yml so Copilot coding agent sessions preinstall iccDEV build, Python, MCP, and shell-validation prerequisites.

Checklist

• Signed all Commits in PR
• Built locally according to docs/build.md
• Followed the guidelines in Contributing document
• Ran relevant CTest/profile tests from docs/ctest.md
• Updated documentation for user-visible behavior changes
• Ran sanitizer coverage for memory-safety or parser changes
• Added or updated regression coverage for behavior changes
• For Python package changes, followed docs/python-packaging-release.md for PR and merge requirements
• Did not change maintainer-owned workflow, CTest, CPack, sanitizer, release, or security infrastructure unless requested by an iccDEV maintainer
• New source files include the ICC copyright and BSD 3-Clause license header
• Code style matches nearby code: 2-space indent, K&R braces, m_ members

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[Copilot]

Pull request overview

Updates the MCP runtime container image build to address the OpenSSL CVE reported in issue #1702 by ensuring patched OpenSSL runtime components are installed.

Changes:

• Pins libssl3t64 to 3.5.5-1ubuntu3.2 in the runtime image.
• Pins openssl-provider-legacy to 3.5.5-1ubuntu3.2 in the runtime image.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.