fix[notask]: remove OpenSSL from llama addons

[gianni-cor]

🎯 What problem does this PR solve?

• LLM and embedding addon binaries inherit libssl and libcrypto through Fabric's exported cpp-httplib target.
• Builds therefore depend on whichever system OpenSSL happens to be discoverable on the build host.

📝 How does it solve it?

• Pin both addons to the fixed qvac-fabric registry revision from qvac-registry-vcpkg#244.
• Remove the addon-level find_package(OpenSSL) workaround.
• Patch-bump @qvac/llm-llamacpp to 0.36.4 and @qvac/embed-llamacpp to 0.26.3.

🧪 How was it tested?

• Built both addons on macOS arm64 against the fixed Fabric overlay.
• Confirmed the installed llama-targets.cmake contains no OpenSSL target references.
• Confirmed otool -L reports neither libssl nor libcrypto for either .bare binary.
• Ran git diff --check.

Dependency

Draft until qvac-registry-vcpkg#244 merges. The registry baseline SHA must then be refreshed to the commit reachable from main.

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Authored by Cursor GPT-5.6 Sol using qv-addon-pr-create and qv-qip-triage.

[github-actions]

Review Status

Current Status: ❌ PENDING
Approvals so far: none

Pending reviews: Needs 1 Management or Team Lead, and 1 more from Management, Team Lead, or Member.