fix(core): linux redo shortcut key (#15623)

fix #15599

#### PR Dependency Tree


* **PR #15623** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Corrected the Control+Y redo shortcut so it only activates on Windows
and Linux, preventing unintended behavior on other platforms.

* **Tests**
* Updated cross-platform keyboard tests to explicitly verify undo and
redo behavior in a Linux browser environment.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/blocks/root/src/keyboard/keyboard-manager.ts

@@ -11,7 +11,7 @@ import {
   getSelectedModelsCommand,
 } from '@blocksuite/affine-shared/commands';
 import { matchModels } from '@blocksuite/affine-shared/utils';
-import { IS_MAC, IS_WINDOWS } from '@blocksuite/global/env';
+import { IS_LINUX, IS_MAC, IS_WINDOWS } from '@blocksuite/global/env';
 import {
   type BlockComponent,
   BlockSelection,
@@ -98,7 +98,7 @@ export class PageKeyboardManager {
           }
         },
         'Control-y': ctx => {
-          if (!IS_WINDOWS) return;
+          if (!IS_WINDOWS && !IS_LINUX) return;
 
           ctx.get('defaultState').event.preventDefault();
           if (this._doc.canRedo) {

tests/blocksuite/e2e/cross-platform/basic.spec.ts

@@ -226,15 +226,20 @@ test(scoped`basic paired undo/redo`, async ({ page }) => {
 });
 
 test(scoped`undo/redo with keyboard`, async ({ page }) => {
+  await page.addInitScript(() => {
+    Object.defineProperty(navigator, 'platform', {
+      get: () => 'Linux x86_64',
+    });
+  });
   await enterPlaygroundRoom(page);
   await initEmptyParagraphState(page);
   await focusRichText(page);
   await type(page, 'hello');
 
   await assertText(page, 'hello');
-  await undoByKeyboard(page);
+  await page.keyboard.press('Control+z');
   await assertEmpty(page);
-  await redoByClick(page);
+  await page.keyboard.press('Control+y');
   await assertText(page, 'hello');
 });