Move demo build dir to where integration tests expect them

packages/webamp/scripts/rollupPlugins.mjs

@@ -31,7 +31,7 @@ export function getPlugins({ minify, outputFile, vite }) {
       compilerOptions: {
         jsx: "react-jsx",
         module: "esnext",
-        declarationDir: vite ? "dist/declarations" : undefined,
+        declarationDir: vite ? "dist/demo-site/declarations" : undefined,
         // Without this it complains that files will be overwritten, but I don't
         // think this ever gets used...
         outDir: vite ? undefined : "./tsBuilt",

packages/webamp/vite.config.ts

@@ -3,7 +3,7 @@ import { getPlugins } from "./scripts/rollupPlugins.mjs";
 
 export default defineConfig({
   build: {
-    outDir: "../dist",
+    outDir: "../dist/demo-site",
   },
   root: "demo",
   // Used only by the demo site, not the library