fix(dev): resolve optimizeDeps entries properly on Windows (#12637)

* fix(dev): resolve optimizeDeps entries properly on Windows

* Add changeset

* Sign CLA

Author: wKovacs64

Diff for: .changeset/gentle-carrots-appear.md

@@ -0,0 +1,5 @@
+---
+"@react-router/dev": patch
+---
+
+Properly resolve Windows file paths to scan for Vite's dependency optimization when using the `unstable_optimizeDeps` future flag.

Diff for: contributors.yml

@@ -330,6 +330,7 @@
 - willemarcel
 - williamsdyyz
 - willsawyerrrr
+- wkovacs64
 - xavier-lc
 - xcsnowcity
 - yionr

Diff for: packages/react-router-dev/vite/plugin.ts

@@ -800,9 +800,9 @@ export const reactRouterVitePlugin: ReactRouterVitePlugin = () => {
           optimizeDeps: {
             entries: ctx.reactRouterConfig.future.unstable_optimizeDeps
               ? [
-                  ctx.entryClientFilePath,
+                  vite.normalizePath(ctx.entryClientFilePath),
                   ...Object.values(ctx.reactRouterConfig.routes).map((route) =>
-                    path.join(ctx.reactRouterConfig.appDirectory, route.file)
+                    resolveRelativeRouteFilePath(route, ctx.reactRouterConfig)
                   ),
                 ]
               : [],