Fix table default background color (#1622)

.changeset/spotty-avocados-doubt.md

@@ -0,0 +1,5 @@
+---
+"@tabler/core": patch
+---
+
+Fix table default background color

src/scss/_variables.scss

@@ -790,6 +790,7 @@ $spinner-border-width: 2px !default;
 $spinner-border-width-sm: 1px !default;
 
 // Tables
+$table-bg: transparent !default;
 $table-bg-scale-dark: 40% !default;
 $table-color: inherit !default;
 $table-cell-padding-x: 0.75rem !default;