feat(ephemeral): allow for non-persistent context operation (#405)

Ref: https://github.com/microsoft/playwright-mcp/issues/367
Ref: https://github.com/microsoft/playwright-mcp/issues/393

src/tools/common.ts

@@ -31,7 +31,7 @@ const close = defineTool({
   handle: async context => {
     await context.close();
     return {
-      code: [`// Internal to close the page`],
+      code: [`await page.close()`],
       captureSnapshot: false,
       waitForNetwork: false,
     };