ESQL: Make all LOOKUP JOIN caps depend on the V12 one (#120894)

Author: alex-spies

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -699,7 +699,7 @@ public enum Cap {
         /**
          * LOOKUP JOIN with TEXT fields on the right (right side of the join) (#119473)
          */
-        LOOKUP_JOIN_TEXT(Build.current().isSnapshot()),
+        LOOKUP_JOIN_TEXT(JOIN_LOOKUP_V12.isEnabled()),
 
         /**
          * LOOKUP JOIN without MV matching (https://github.com/elastic/elasticsearch/issues/118780)