Use a throttled update to update our window state. Throttling should prevent scenarios where the Terminal window state and PTY window state get de-sync'd, and cause the window to minimize/restore constantly in a loop.  "Should" is doing a lot of work in this sentence.

A 200ms delay was chosen because it's the typical animation timeout in Windows. This does result in a delay between the PTY requesting a change to the window state and the Terminal realizing it, but should mitigate issues where the Terminal and PTY get desync'd.

I think we're overall not super confident that this fixes the root causes of the issue. Rather, we're hopeful that a small amount of throttling here should leave time for the Terminal and pty to sync back up. We're comfortable enough with that as a bandaid for 1.14 preview, to see how this behaves in the wild.

(cherry picked from commit c5fad74c548cbe573207a525a27b00dfc9a721fb)
Service-Card-Id: 82315892
Service-Version: 1.14