SelectingTimeSetsSelectedTime is flaky on Wasm

[Youssef1313]

Current behavior

1 unit test(s) failed (count=1).
	Failing Tests:
	1. SelectingTimeSetsSelectedTime()


---
	Details:
Failed: SelectingTimeSetsSelectedTime() [Microsoft.VisualStudio.TestTools.UnitTesting.AssertFailedException] 
 Microsoft.VisualStudio.TestTools.UnitTesting.AssertFailedException: Timed out waiting for condition to be met. SelectItemByIndex():201
   at Private.Infrastructure.TestServices.WindowHelper.WaitFor(Func`1 condition, Int32 timeoutMS, String message, String callerMemberName, Int32 lineNumber)
   at Windows.UI.Xaml.Tests.Common.LoopingSelectorHelper.SelectItemByIndex(LoopingSelector loopingSelector, Int32 indexOfItemToSelect, SelectionMode selectionMode)
   at Uno.UI.RuntimeTests.MUX.Helpers.DateTimePickerHelper.SelectTimeInOpenTimePickerFlyout(Calendar timeToSelect, SelectionMode selectionMode)
   at Uno.UI.RuntimeTests.Tests.Windows_UI_Xaml_Controls.TimePickerIntegrationTests.SelectingTimeSetsSelectedTime()
   at Uno.UI.Samples.Tests.UnitTestsControl.<>c__DisplayClass63_1.<<ExecuteTestsForInstance>g__InvokeTestMethod|3>d.MoveNext()

Disabled in #16168

Expected behavior

No response

How to reproduce it (as minimally and precisely as possible)

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Workaround

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Works on UWP/WinUI

None

Environment

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NuGet package version(s)

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Affected platforms

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IDE

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IDE version

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Relevant plugins

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Anything else we need to know?

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