Replace text-align classes with tailwind (#33905)

Small refactor to remove these CSS classes in favor of tailwind.

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

web_src/css/modules/container.css

@@ -14,7 +14,3 @@
 .ui.container.medium-width {
   width: 800px;
 }
-
-.ui[class*="center aligned"].container {
-  text-align: center;
-}