Fix the clipboard built-in

[zadjii-msft]

I think after #518, I really messed up the clipboard built-in extension.

Everything gets a -2147221008 / CO_E_NOTINITIALIZED now.

Details

This looks vaguely like microsoft/WindowsAppSDK#3932 which suggests doing

[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]

private static extern IntPtr CreateEvent(
IntPtr lpEventAttributes, bool bManualReset,
bool bInitialState, string lpName);

[DllImport("kernel32.dll")]
private static extern bool SetEvent(IntPtr hEvent);

[DllImport("ole32.dll")]
private static extern uint CoWaitForMultipleObjects(
uint dwFlags, uint dwMilliseconds, ulong nHandles,
IntPtr[] pHandles, out uint dwIndex);

private static IntPtr redirectEventHandle = IntPtr.Zero;

// Do the redirection on another thread, and use a non-blocking
// wait method to wait for the redirection to complete.
public static void RedirectActivationTo(AppActivationArguments args, AppInstance keyInstance)
{
redirectEventHandle = CreateEvent(IntPtr.Zero, true, false, null);
Task.Run(() =>
{
keyInstance.RedirectActivationToAsync(args).AsTask().Wait();
SetEvent(redirectEventHandle);
});
uint CWMO_DEFAULT = 0;
uint INFINITE = 0xFFFFFFFF;
_ = CoWaitForMultipleObjects(
CWMO_DEFAULT, INFINITE, 1,
new IntPtr[] { redirectEventHandle }, out uint handleIndex);
}

but I don't think I have time to validate that right now, so I'm just disabling it for now

Ah fuck everything about the WinRT clipboard sucks.

microsoft/windows-rs#317
microsoft/terminal#17006

I idly wonder if the clipboard extension as a separate process would just fix it. Either way, we gotta fix this in the toolkit it would seem