Fix table alignment classes (#30144)

Fixes go-gitea/gitea#30142, regression from
go-gitea/gitea#30047. I searched the codebase
and only `bottom aligned` was definitely not in use so I removed it.

(cherry picked from commit b08c7afe5f60075ed62a5ffe034b88624983d007)

Author: silverwind

web_src/css/modules/table.css

@@ -152,6 +152,31 @@
   }
 }
 
+.ui.table[class*="left aligned"],
+.ui.table [class*="left aligned"] {
+  text-align: left;
+}
+
+.ui.table[class*="center aligned"],
+.ui.table [class*="center aligned"] {
+  text-align: center;
+}
+
+.ui.table[class*="right aligned"],
+.ui.table [class*="right aligned"] {
+  text-align: right;
+}
+
+.ui.table[class*="top aligned"],
+.ui.table [class*="top aligned"] {
+  vertical-align: top;
+}
+
+.ui.table[class*="middle aligned"],
+.ui.table [class*="middle aligned"] {
+  vertical-align: middle;
+}
+
 .ui.table th.collapsing,
 .ui.table td.collapsing {
   width: 1px;