fix(tabline): transparency issue NvChad/ui#451

Author: siduck

lua/base46/integrations/tbline.lua

@@ -3,6 +3,7 @@ local colors = require("base46").get_theme_tb "base_30"
 local config = require "nvconfig"
 
 local highlights = {
+  Tabline = { bg = colors.black2 },
 
   TbFill = {
     bg = colors.black2,
@@ -76,6 +77,7 @@ local highlights = {
 }
 
 local hlgroups_glassy = {
+  "Tabline",
   "TbFill",
   "TbBufOn",
   "TbBufOff",