chore(core): some dnd events (#9206)

fix AF-1999

packages/frontend/core/src/desktop/pages/workspace/detail-page/detail-page-header.tsx

@@ -22,6 +22,7 @@ import { JournalService } from '@affine/core/modules/journal';
 import { ViewIcon, ViewTitle } from '@affine/core/modules/workbench';
 import type { AffineDNDData } from '@affine/core/types/dnd';
 import { useI18n } from '@affine/i18n';
+import { track } from '@affine/track';
 import type { Doc } from '@blocksuite/affine/store';
 import { useLiveData, useService, type Workspace } from '@toeverything/infra';
 import { forwardRef, useCallback, useEffect, useRef, useState } from 'react';
@@ -187,6 +188,9 @@ export function DetailPageHeader(
             id: page.id,
           },
         },
+        onDragStart: () => {
+          track.$.header.$.dragStart();
+        },
         dragPreviewPosition: 'pointer-outside',
       };
     }, [page.id]);