fix: pass rollup watch options when building in watch mode (#20674)

Signed-off-by: Ferdinand Thiessen <[email protected]>

Author: susnux

packages/vite/src/node/build.ts

@@ -726,7 +726,10 @@ async function buildEnvironment(
         logger,
       )
       const resolvedChokidarOptions = resolveChokidarOptions(
-        options.watch.chokidar,
+        {
+          ...(rollupOptions.watch || {}).chokidar,
+          ...options.watch.chokidar,
+        },
         resolvedOutDirs,
         emptyOutDir,
         environment.config.cacheDir,
@@ -736,6 +739,7 @@ async function buildEnvironment(
       const watcher = watch({
         ...rollupOptions,
         watch: {
+          ...rollupOptions.watch,
           ...options.watch,
           chokidar: resolvedChokidarOptions,
         },