Stop using fonts smaller than 5px in height
Stop using fonts smaller than 5px in height

The console must decide whether characters are half-vs-full width, and it
seems to make poorer decisions with fonts that are atypically small.  The
console properties dialog doesn't allow fonts smaller than 5px.

For example, (U+2026 HORIZONTAL ELLIPSIS) is half-width in Lucida Console
and Consolas, but with Lucida Console, 2px or 4px height, the console
thinks it's full-width.

Disallowing smaller fonts will force winpty to use larger windows, which
makes it more likely to hit the maximum window size constraint.

See https://github.com/Microsoft/vscode/issues/19665.

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