fix(ssr): dont replace rollup input (#7275)

Author: manucorporat

packages/vite/src/node/build.ts

@@ -407,14 +407,14 @@ async function doBuild(
   }
 
   const rollupOptions: RollupOptions = {
-    input,
     context: 'globalThis',
     preserveEntrySignatures: ssr
       ? 'allow-extension'
       : libOptions
       ? 'strict'
       : false,
     ...options.rollupOptions,
+    input,
     plugins,
     external,
     onwarn(warning, warn) {