fix: installation tool on Windows (#345)

Author: mxschmitt

src/tools/install.ts

@@ -33,7 +33,7 @@ const install = defineTool({
   handle: async context => {
     const channel = context.config.browser?.launchOptions?.channel ?? context.config.browser?.launchOptions.browserName ?? 'chrome';
     const cliUrl = import.meta.resolve('playwright/package.json');
-    const cliPath = fileURLToPath(path.join(cliUrl, '..', 'cli.js'));
+    const cliPath = path.join(fileURLToPath(cliUrl), '..', 'cli.js');
     const child = fork(cliPath, ['install', channel], {
       stdio: 'pipe',
     });