Migrate `gl-grid-tpl-rows-auto` to Tailwind

What does this MR do and why?

Migrate gl-grid-tpl-rows-auto to Tailwind

Migrates the gl-grid-tpl-rows-auto CSS util to its Tailwind equivalent configured as gl-grid-rows-auto.

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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..8ee7bbf717ff 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 573 definitions need to be migrated to Tailwind.
  * Let's do this! 🚀
  */
 module.exports = {
@@ -352,7 +352,6 @@ module.exports = {
   '.md-align-self-center': { '@media (min-width: 768px)': { 'align-self': 'center' } },
   '.align-self-baseline': { 'align-self': 'baseline' },
   '.order-n1': { order: '-1' },
-  '.grid-tpl-rows-auto': { 'grid-template-rows': 'auto' },
   '.sm-grid-template-columns-2': {
     '@media (min-width: 576px)': { 'grid-template-columns': '1fr 1fr' },
   },

Related to #456618 (closed)