Ignore order in LookupMessageFromIndexKeepReordered (elastic#118256)

Fix elastic#118150 Fix elastic#118151

We should also ignore the order for this test, as the output rows are
not deterministic in all cases.

(cherry picked from commit ccc416d)

# Conflicts:
#	muted-tests.yml

x-pack/plugin/esql/qa/testFixtures/src/main/resources/lookup-join.csv-spec

@@ -279,6 +279,7 @@ FROM sample_data
 | LOOKUP JOIN message_types_lookup ON message
 | KEEP type, client_ip, event_duration, message
 ;
+ignoreOrder:true
 
 type:keyword | client_ip:ip | event_duration:long | message:keyword
 Success      | 172.21.3.15  | 1756467             | Connected to 10.1.0.1