The inline-comment MCP tool now requires confirmed=true to post (otherwise
calls are buffered). This structurally prevents subagent test/probe
comments from reaching customer PRs — subagents that inherit the tool and
probe it without confirmed=true see their calls harmlessly buffered.
Backward compatible: against older versions of claude-code-action that
don't know the param, the extra field is ignored and the comment posts
as before.