Use user32.dll GetForegroundWindow() to fix WAM pop-behind

[JustinGrote]

Is your feature request related to a problem? Please describe the problem.

msgraph-sdk-powershell/src/Authentication/Authentication.Core/Utilities/WindowHandleUtlities.cs

Lines 41 to 43 in 34e2549

	IntPtr consoleHandle = GetConsoleWindow();
	IntPtr handle = GetAncestor(consoleHandle, GetAncestorFlags.GetRootOwner);
	return handle;

Describe the solution you'd like.

[DllImport("user32.dll")]
static extern IntPtr GetForegroundWindow();
IntPtr parentWindowHandle = GetForegroundWindow();

Additional context?

No response

[ramsessanchez]

Hi Justin Grote (@JustinGrote) please provide a detailed explanation of the change and it's impact. Provide that here or feel free to open a pr for review.

[microsoft-github-policy-service]

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