Fixed imports of vite.config.extension.ts from projects (#9622)

Path that was being used for fs.existsSync was not correct, missing .ts on
the end, so no extensions were being found or applied.

Import of extensions from correct staticPath triggers a TypeError:
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts"

This is a known issue with vite importing from files in other packages
in a monorepo: vitejs/vite#5370

For now, using the workaround of importing via the relative path. Switching
to bun will apparently solve this.

packages/client/vite.config.ts

@@ -135,11 +135,13 @@ const getProjectConfigExtensions = async (config: UserConfig) => {
     .filter((dirent) => dirent.isDirectory())
     .map((dirent) => dirent.name)
   for (const project of projects) {
-    const staticPath = path.resolve(__dirname, `../projects/projects/`, project, 'vite.config.extension')
+    const staticPath = path.resolve(__dirname, `../projects/projects/`, project, 'vite.config.extension.ts')
     if (fs.existsSync(staticPath)) {
       try {
         // eslint-disable-next-line @typescript-eslint/no-var-requires
-        const { default: viteConfigExtension } = await import(staticPath)
+        const { default: viteConfigExtension } = await import(
+          `../projects/projects/${project}/vite.config.extension.ts`
+        )
         if (typeof viteConfigExtension === 'function') {
           const configExtension = await viteConfigExtension()
           // eslint-disable-next-line @typescript-eslint/no-non-null-assertion