GitHub owner/repo slugs are case-insensitive; `gh repo view` returns
the canonical casing while callers may pass any casing. The new guard
used strict equality, so a caller in the correct repo who typed
`owner/repo` while the canonical form was `Owner/Repo` was forced to
pass a redundant `branch`/`run` selector. Normalize both sides via
toLowerCase() before deciding the cwd is a different repository.
Regression test covers the casing-only match.
Refs #1949#1951
roboomp
1f32b8aaf9