fs 2.x configure links system libuv whenever pkg-config finds libuv-devel
(installed as a build-time sysreq), producing an fs.so with NEEDED libuv.so.1.
That binary fails to dyn.load on consumer machines lacking runtime libuv,
because install.packages/renv do not install SystemRequirements. Add a
configure patch that short-circuits to the bundled static libuv build (cmake)
so the fs binary is self-contained on every platform.
