fork of hey-api/openapi-ts because I need some additional things

test: add unit tests for sibling schema resolution during bundling master

Cover the fallback resolution and crawl path rebase fixes in inventory$Ref with five scenarios: bare wrapper chain, extended wrapper chain, direct reference (no wrapper), multiple siblings through an extended wrapper, and collision handling when two external files expose same-named sibling schemas. Signed-off-by: Jason Westover <jwestover@nvidia.com>