Fix QuickGrid InvokeAsync exception when calling RefreshDataAsync method

[Yuvan111]

Fix QuickGrid InvokeAsync exception when calling RefreshDataAsync method

Description

When QuickGrid.RefreshDataAsync method is called from a background callback, such as a timer or other non-UI service, the component could throw an InvalidOperationException because the re-render path was not dispatched through InvokeAsync.

This caused issue #58794 when RefreshDataAsync method was triggered outside the Blazor renderer synchronization context.

Root Cause

RefreshDataAsync was refreshing data and then calling StateHasChanged directly. When the method was invoked from a background thread, this bypassed the renderer’s synchronization context and could fail with an InvokeAsync related exception.

The fix updates the re-render flow to use:
await InvokeAsync(StateHasChanged);

This ensures the UI refresh is marshaled onto the correct context.

Testing

Added a unit test that calls RefreshDataAsync from a timer callback to simulate a background-service scenario. The test fails without the fix and passes with it.

Fixes #58794

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