Fix UnaryExpression transpile for ns and const

[TwitchBronBron]

Fix a bug transpiling UnaryExpression when referencing namespaces and consts.

Source:

const foo = 1
sub main()
    bar = -foo
end sub

transpiles to: BEFORE

sub main()
    bar = -foo 'oops, that should be 1
end sub

transpiles to: AFTER

sub main()
    bar = - 1
end sub