Exception thrown on solution load in VSMac

[Therzok]

Version Used:
4.5.0-dev (tip of #65568)

Steps to Reproduce:

1. Open a maui project in VSMac
2. Look in the log file for exceptions

Expected Behavior:

No exception (@CyrusNajmabadi mentioned this might cause some events to be discarded).

Actual Behavior:

https://gist.github.com/Therzok/ee0716447f7dbe8f40f0767bf1eb029a

More information:

What is happening here, is likely a side-effect of VSMac having multiple Host kind workspaces. VSMac supports multiple solutions opened at the same time, so we create one workspace per solution opened.

There is also an empty workspace we create, which I'm looking into how to remove. But the problem might still persist.