The UWP pivot is experiencing performance issues while using the DataGrid inside the pivot item.

### Describe the bug

We have used the UWP DataGrid control inside the UWP PivotItem. While switching between pivot items, a performance delay occurs due to the number of columns and rows. Even with only 23 columns and 33 rows displayed, we are still experiencing performance delays.

Can you suggest a solution?

### Steps to reproduce the bug

Step 1: Run the sample.
Step 2: Click Sheet2 pivot item.

**Expected behavior:** The performance delay should not occur while switching pivot items.
**Observed behavior:** A performance delay occurs while switching pivot items.

**Sample**
[Pivot_PerformanceIssue.zip](https://github.com/user-attachments/files/17359616/Pivot_PerformanceIssue.zip)

### Expected behavior

The performance delay should not occur while switching pivot items.

### Screenshots

https://github.com/user-attachments/assets/e33d04ea-41d6-4ce4-8756-690d0c8ccc34

### NuGet package version

None

### Windows version

Windows 11 (22H2): Build 22621

### Additional context

_No response_

Run the attached Pivot_PerformanceIssue.zip sample on Windows 11 and reproduce the delay by switching to the Sheet2 pivot item with the DataGrid visible. Compare the pivot-switch behavior with the reported 23 columns and 33 rows, then verify that switching no longer has the reported performance delay.

Written by the indexing model from the issue text.