Inconsistent use of theme variables

[asafpm]

In templates/partials/navigation.html.twig the theme variables are used inconsistently. For example at the top of the file there is

{% set navbar_style = theme_var('navbar_style') %}
{% set navbar_bgcolor = theme_var('navbar_bgcolor') %}

while another theme variable is used as:

config.themes.bootstrap4.dropdown.enabled

This creates problems when making inherited themes based on bootstrap4 because navbar_style and navbar_bgcolor are loaded from the inherited theme while config.themes.bootstrap4.dropdown.enabled is loaded from the parent bootstrap4 theme.

[mfi-teresa]

submitted PR to fix this (surprised no one else has) - change config.themes.bootstrap4.dropdown.enabled
to
theme.dropdown.enabled
and it fixes.