When a token (GitHub App, fine-grained PAT, or GITHUB_TOKEN) lacks the
project permission, querying projectItems on a PR or issue fails with
"Resource not accessible by integration" or "Resource not accessible by
personal access token". ProjectsV2IgnorableError did not match these
errors, causing commands like pr view, pr edit, and issue view to fail
entirely instead of gracefully omitting project data.
Add "Resource not accessible by" as an ignorable error prefix. This is
safe because ProjectsV2IgnorableError is only called in project-specific
code paths.
Closes#13280
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
