Add Vite 6 support (#12469)

Author: markdalgleish

.changeset/lovely-lemons-bake.md

@@ -0,0 +1,5 @@
+---
+"@react-router/dev": minor
+---
+
+Add support for Vite v6

integration/helpers/create-fixture.ts

@@ -352,7 +352,7 @@ export async function createFixtureProject(
   init: FixtureInit = {},
   mode?: ServerMode
 ): Promise<string> {
-  let template = "vite-template";
+  let template = "vite-5-template";
   let integrationTemplateDir = path.resolve(__dirname, template);
   let projectName = `rr-${template}-${Math.random().toString(32).slice(2)}`;
   let projectDir = path.join(TMP_DIR, projectName);

integration/helpers/vite-template/.gitignore renamed to integration/helpers/vite-5-template/.gitignore

@@ -1,5 +1,5 @@
 {
-  "name": "integration-vite-template",
+  "name": "integration-vite-5-template",
   "version": "0.0.0",
   "private": true,
   "sideEffects": false,