Mute esql data stream lookup MP YAML tests

x-pack/qa/multi-project/xpack-rest-tests-with-multiple-projects/build.gradle

@@ -47,6 +47,7 @@ tasks.named("yamlRestTest").configure {
     '^esql/64_enrich_int_match/*',
     '^esql/180_match_operator/*',
     '^esql/190_lookup_join/*',
+    '^esql/191_lookup_join_on_datastreams/*',
     '^esql/191_lookup_join_text/*',
     '^health/10_usage/*',
     '^ilm/10_basic/Test Undeletable Policy In Use',