chore: Test Vite 6

flow-server/src/main/java/com/vaadin/flow/server/frontend/FrontendTools.java

@@ -856,6 +856,7 @@ private List<String> getNpmExecutable(boolean removePnpmLock) {
         returnCommand.add("--no-update-notifier");
         returnCommand.add("--no-audit");
         returnCommand.add("--scripts-prepend-node-path=true");
+        returnCommand.add("--legacy-peer-deps");
 
         if (removePnpmLock) {
             // remove pnpm-lock.yaml which contains pnpm as a dependency.

flow-server/src/main/resources/com/vaadin/flow/server/frontend/dependencies/vite/package.json

@@ -9,7 +9,7 @@
   "license": "Apache-2.0",
   "dependencies": {},
   "devDependencies": {
-    "vite": "5.4.11",
+    "vite": "6.0.0-beta.10",
     "@vitejs/plugin-react": "4.3.3",
     "@preact/signals-react-transform": "0.4.0",
     "@rollup/plugin-replace": "6.0.1",

flow-server/src/test/java/com/vaadin/flow/server/frontend/FrontendToolsTest.java

@@ -417,7 +417,7 @@ public void homeNodeIsNotForced_useGlobalNode()
                 not(containsString(vaadinHomeDir)));
         assertThat(tools.getNodeExecutable(), not(containsString(baseDir)));
 
-        assertEquals(4, tools.getNpmExecutable().size());
+        assertEquals(5, tools.getNpmExecutable().size());
         assertThat(tools.getNpmExecutable().get(0), containsString("npm"));
         assertThat(tools.getNpmExecutable().get(1),
                 containsString("--no-update-notifier"));