fix: responsive chartjs (#363)

Author: lukasvinclav

src/unfold/templates/unfold/layouts/base_simple.html

@@ -10,7 +10,7 @@
             {% endblock %}
         {% endif %}
 
-        <div id="main" class="shadow flex-grow">
+        <div id="main" class="shadow flex-grow min-w-0">
             {% block content_before %}
                 {% include "unfold/helpers/header.html" %}
             {% endblock %}