Migrate `gl-reset-bg` to Tailwind

What does this MR do and why?

Migrate gl-reset-bg to Tailwind

Migrates the gl-reset-bg CSS util to its Tailwind equivalent configured as gl-bg-inherit.

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Before	After

CSS-in-Js diff

diff --git a/config/helpers/tailwind/css_in_js.js b/config/helpers/tailwind/css_in_js.js
index f4f758ebfdeb..ef2f5ccff9d5 100644
--- a/config/helpers/tailwind/css_in_js.js
+++ b/config/helpers/tailwind/css_in_js.js
@@ -1,5 +1,5 @@
 /**
- * The following 574 definitions need to be migrated to Tailwind.
+ * The following 572 definitions need to be migrated to Tailwind.
  * Let's do this! 🚀
  */
 module.exports = {
@@ -36,8 +36,6 @@ module.exports = {
   '.bg-transparent\\!': { 'background-color': 'transparent !important' },
   '.hover-bg-transparent\\!': { '&:hover': { 'background-color': 'transparent !important' } },
   '.bg-white\\!': { 'background-color': 'var(--white, #fff) !important' },
-  '.reset-bg': { 'background-color': 'inherit' },
-  '.reset-bg\\!': { 'background-color': 'inherit !important' },
   '.bg-gray-10\\!': { 'background-color': 'var(--gray-10, #fbfafd) !important' },
   '.focus-bg-gray-50': { '&:focus': { 'background-color': 'var(--gray-50, #ececef)' } },
   '.hover-bg-gray-50': { '&:hover': { 'background-color': 'var(--gray-50, #ececef)' } },

Related to #456618