toggleconsole sometimes types grave accent and tilde into console

[ma-choo]

On Windows 10, using the hardcoded toggleconsole keys, grave accent '`' and tilde '~' will sometimes enter these characters into the input line. I made a cheap fix for myself by adding if ( ch == '`' ) return; to the Field_CharEvent function, but I don't know if this would lead to other issues.

[a1batross]

Field_CharEvent is called only when SDL Text mode is enabled. Seems that on Windows 10 text mode is being enabled too early, so '`' or '~' appears in that event, instead of key event.

[mittorn]

Maybe restore '`' check?