fix(editor): paste when select multiple block texts (#10227)

[BS-2512](https://linear.app/affine-design/issue/BS-2512/选中多段粘贴，多段只有第一段会被replace，这个bug还在)

tests/kit/src/utils/clipboard.ts

@@ -0,0 +1,24 @@
+import type { Page } from '@playwright/test';
+
+export async function pasteContent(
+  page: Page,
+  clipData: Record<string, unknown>
+) {
+  await page.evaluate(
+    ({ clipData }) => {
+      const e = new ClipboardEvent('paste', {
+        clipboardData: new DataTransfer(),
+      });
+      Object.defineProperty(e, 'target', {
+        writable: false,
+        value: document,
+      });
+      Object.keys(clipData).forEach(key => {
+        e.clipboardData?.setData(key, clipData[key] as string);
+      });
+      document.dispatchEvent(e);
+    },
+    { clipData }
+  );
+  await page.waitForTimeout(100);
+}