macOS Guest Clipboard Erased When App Copied From Closes

**Describe the issue**
In macOS running natively, I can select text in an app, close the app, then paste the text into another app.
In UTM, if I select text in an app, then close the app, the clipboard is instantly erased.

(This is a pain, as my long-accustom workflow is to open an app+file, grab required text, and close the app to automagically return to the app in which I am working, then paste the text. Now, I have to open an app+file, grab required text, manually switch back to the app in which I am working, paste the text, switch back to the app from which I grabbed text, and close it. In other words, what was a 4 step process now becomes a 6 step process, slowing work by somewhere between a third and a half!)

**Configuration**
* UTM Version: 4.6.3
* Host macOS Version: 14.7.1
* Guest macOS Version: 14.7.1 or 15.1.1 or 15.2 (basically, all 13.x or later versions which I have tested)
* Mac Chip (Intel, M1, ...): M2 Max 96GB

**Crash log**
None.

**Debug log**
No relevant entries in either host or guest logs.

**Upload VM**
N/A