Add network access to agentic-workflows MCP server container (#14201)

* Initial plan

* Add network access to agentic-workflows MCP server container

Enable --network host for agentic-workflows stdio container to allow
GitHub API access for CLI commands (audit, logs, compile). The container
needs to reach api.github.com to execute gh CLI commands.

Updated:
- mcp_config_builtin.go: Add --network host to Docker args
- Documentation: Updated comments to explain network requirement
- Tests: Updated test expectations for new args format

Fixes issue where daily-cli-tools-tester workflow couldn't access
agentic-workflows MCP tools due to network isolation.

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

* Recompile all workflows with agentic-workflows network access

All workflows using agentic-workflows tool now include --network host
Docker arg to enable GitHub API access from the MCP server container.

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

* Fix remaining test expectations for network args

Updated test assertions in mcp_config_compilation_test.go and
importable_tools_test.go to expect --network host flag in args.

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot