Alert text should be copiable to the clipboard.

[theraot]

When I get an alert in the editor (which I believe is an AcceptDialog), such as this one:

I want to press the keyboard shortcut to copy (Ctrl + C) while the alert window has keyboard focus, and I want that to result in the text of the alert being copied to the clipboard.

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For those who don't know, this is a feature of message boxes in Windows. For example if I use this code:

OS.alert("AAA")

Which way much easier to use than AcceptDialog, but I digress...

I get a native message box, which in Windows (in Spanish) looks like this:

Which I can copy and paste, giving me this:

---------------------------
Alert!
---------------------------
AAA
---------------------------
Aceptar   
---------------------------

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To be fair, I suppose that changing the alert to allow selecting the text, or adding a button to copy the text to the clipboard might make it easier for discoverability. Although, personally I'm not asking for the discoverability.

[Calinou]

It was considered to make dialog text use RichTextLabel at some point (so selection could be enabled), but there were some blockers to doing this.