Small fix for crashing log window when written from other thread

[Skarsnik]

For some reason, changing this code to this makes it stop crashing when writing to the console from another thread. The value from _lines.Count was not the same in virtualListView1.VirtualListSize, maybe write to VirtuListSize are delayed?

Prevent crashs when writing in the console from multiple threads.

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• I have run any relevant test suites
• I, the commit author, have read the licensing terms for contributors (last updated 2024-06-22) and am compliant

[YoshiRulz]

What pattern were you using that wasn't working with the log window? Something like new Thread(() => Console.WriteLine(...)).Start();? edit: Well CNR with that, I'll just take your word for it.

[Skarsnik]

I have an external tool that does network stuff in its own thread. The main thread and the network thread both do some Console.Writeln().
I think my issue compared to #2694 is that I do a lot of multiline output (for example, in https://github.com/Skarsnik/Bizhawk-nwa-tool/blob/master/src/NWAServer.cs#L118 ) and if I remember correctly (sorry, I fixed this like over 6 months ago?) both _lines.Count and virtualListView1.VirtualListSize were not the same despiste the asignation.

[vadosnaprimer]

I don't mind merging this without testing.