Dark version of default theme always trigger the pager

### Description

When using the dark version of the default theme, every command output is displayed by the pager, even if it fits on the screen.

### Steps to reproduce

1. Add `syntax_style = default -dark` to your config file
1. Open chinook db in litecli and enter the `select * from genres limit 1` command

### Expected result

The output should be displayed without being handled by the pager, since it fits on the screen

### Actual behavior

The output is displayed on fullscreen by the pager program

### Additional info

Despite being similar to #94, these issues aren't the same, since using the default theme without the `-dark` variant doesn't cause this problem.

This issue also causes the table to be vertically formated if `auto_vertical_output` is set to `True` even when not needed (it fits horizontally on the screen).

Probably fixing #94 will also fix this.