fix(rsc): Set a yarn resolution for rollup 4.21.3

[Tobbe]

Setting the resolution works around an issue we were seeing when trying to serve an RSC project

file:///Users/tobbe/tmp/rw-rollup/web/dist/ssr/assets/rsc-auth.ts-12-VjYFUfRl.mjs:820
if (Object$1.defineProperty.sham) defineProperty$5.sham = true;
             ^

TypeError: Cannot read properties of undefined (reading 'defineProperty')
    at file:///Users/tobbe/tmp/rw-rollup/web/dist/ssr/assets/rsc-auth.ts-12-VjYFUfRl.mjs:820:14
    at ModuleJob.run (node:internal/modules/esm/module_job:218:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:329:24)
    at async createMiddlewareRouter (file:///Users/tobbe/tmp/rw-rollup/node_modules/@redwoodjs/vite/dist/middleware/register.js:57:69)
    at async runFeServer (file:///Users/tobbe/tmp/rw-rollup/node_modules/@redwoodjs/vite/dist/runFeServer.js:56:28)

Possibly related to rollup/rollup#5659