Fix @keystonehq/bc-ur-registry patch (#16155)

We use the `@keystonehq/bc-ur-registry` package for integration with
Keystone devices. This package is peculiar as it not only ships with
JavaScript files but also original TypeScript files. When we started
adding support for TypeScript into the build system, we realized that
the TypeScript files were apparently developed using a different
TypeScript config than we use and therefore resulted in errors in our
build process. So we added a patch which removed these TypeScript files
so that we would fall back to using the compiled JavaScript files. This
removed type information but fixed our build system.

Since then, we've bumped this package and the files we removed have
changed, so the patch is no longer valid. This commit recreates the
patch so that we no longer get warnings from `patch-package`.