feat(vite): add logic to nxViteTsPaths:writeBundle to skip copying package.json file if it already exists in dest

The nxViteTsPaths plugin currently always copys the package.json file at the end of the build and does not check if the file was generated from the build process. This adds logic to check if the package.json file already exists in the dist path before copying to prevent overwriting generated files.

Closes nrwl#30312

Author: JSMike

packages/vite/plugins/nx-tsconfig-paths.plugin.ts

@@ -197,9 +197,9 @@ export function nxViteTsPaths(options: nxViteTsPathsOptions = {}) {
       if (isUsingTsSolutionSetup()) return;
       const outDir = options.dir || 'dist';
       const src = resolve(projectRoot, 'package.json');
-      if (existsSync(src)) {
-        const dest = join(outDir, 'package.json');
+      const dest = join(outDir, 'package.json');
 
+      if (existsSync(src) && !existsSync(dest)) {
         try {
           copyFileSync(src, dest);
         } catch (err) {