Steam Overlay can freeze the Mod Manager

[ItsEasyActually]

If a user replaces their game's executable (namely SA2's Launcher.exe) with the SA Mod Manager, it will cause a graphical glitch showing a stretched Steam Overlay notification. Doing anything to refresh the window fixes this. However it seems Steam's Overlay does get integrated and spam pressing Shift + Tab can cause it to "open" and also freeze the Mod Manager.

Report and image courtesy of @Shadowth117.

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While I don't see this as a major issue, it's something we should tentatively look into fixing to some degree. Mainly due to the fact it can cause the manager to freeze.

[ItsEasyActually]

Keeping this open for now in the event we ever find a way to resolve it. Referencing #296 here as I suspect Avalonia may resolve this issue. If it doesn't out of the box, will discuss resolving it as the Avalonia migration begins.