Improvements in the UI for both default and dark themes. Fixes #5133

Improve the style of the highlighted code after query execution for Dark mode. Fixes #4996.
Changed background pattern for geometry viewer to use #fff for all themes. Fixes #5077
Changed the color of selected and hovered item for Select2 dropdown, also tweak the appearance of the tags in multi-select boxes. Fixes #4955
Fixed Firefox monospaced issue by updating the font to the latest version. Fixes #5184

web/pgadmin/misc/statistics/static/js/statistics.js

@@ -103,7 +103,7 @@ define('misc.statistics', [
       onText: gettext('True'),
       offText: gettext('False'),
       onColor: 'success',
-      offColor: 'primary',
+      offColor: 'ternary',
       size: 'mini',
     }
   );